Number

5,001

Positive
Odd
Composite
4 digits

5,001 is an odd 4-digit integer and a composite number. It has 4 divisors and a digital root of 6.

Number properties

ParityOddnot divisible by 2

SignPositive

PrimalityComposite

Absolute value5,001

Digit count4

Digit sum6

Digital root6repeated digit sum

PalindromicNoreads differently backwards

Happy numberNosquared-digit sums reach 1

Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation3 × 1,667

Distinct prime factors23, 1,667

Number of divisors4

Sum of divisors σ(n)6,672

Aliquot sum1,671sum of the proper divisors

ClassificationDeficientthe aliquot sum is less than the number

Euler's totient φ(n)3,332integers below n that share no factor with it

SquarefreeYesno repeated prime factor

All divisors1, 3, 1,667, 5,0014 in total

Arithmetic

Previous number5,000

Next number5,002

Double10,002

Half2,500.5

Square25,010,001

Cube125,075,015,001

Square root70.717748833≈irrational, shown to 9 decimal places

Cube root17.100899375≈

Negation-5,001

Reciprocal0.00019996≈

Representations

Decimal5,001

Binary100111000100113 bits

Octal11611

Hexadecimal1389

Base 363UX

Roman numeralNot defined above 3,999there is no agreed standard notation

In wordsfive thousand and one

Ordinalfive thousand and first

Scientific notation5.001 × 10^3

Engineering notation5.001 × 10^3

Nearest landmarks

Next prime5,003+2

Previous prime4,999−2

Distance to nearest prime2

Nearest square below4,900

Nearest square above5,041

Powers & multiples

5,001 to the power 225,010,001

5,001 to the power 3125,075,015,001

5,001 to the power 4625,500,150,020,001

5,001 to the power 53,128,126,250,250,025,001

First ten multiples5,001, 10,002, 15,003, 20,004, 25,005, 30,006, 35,007, 40,008, 45,009, 50,010

Powers of twoBetween 2^12 (4,096) and 2^13 (8,192)

Divisibility tests

Divisible by 2No, remainder 1

Divisible by 3Yes

Divisible by 4No, remainder 1

Divisible by 5No, remainder 1

Divisible by 6No, remainder 3

Divisible by 7No, remainder 3

Divisible by 8No, remainder 1

Divisible by 9No, remainder 6

Divisible by 10No, remainder 1

Divisible by 11No, remainder 7

Divisible by 12No, remainder 9

Divisible by 100No, remainder 1

Collatz (3n + 1) trajectory

Steps to reach 164the total stopping time

Highest value reached32,0566× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps5,001 → 15,004 → 7,502 → 3,751 → 11,254 → 5,627 → 16,882 → 8,441 → 25,324 → 12,662 → …

Last steps… → 32 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage500,100%

5,001% as a decimal50.01

5,001% of 1005,001

5,001% of 1,00050,010

As a fraction of 1005,001/100

Read another way

As seconds1 hour, 23 minutes and 21 seconds

As bytes4.884 KiB

As a 24-bit colour#001389

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Neighbouring numbers

Derived from 5,001

Nearby primes

5001 (year)

Common year
365 days
51st century
Snake

5001 will be a common year of 365 days. It begins on a Thursday and ends on a Thursday. Easter Sunday falls on 19 April.

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Structure of the year

Leap yearNonot divisible by 4

Days in the year365

Weeks in the year53ISO 8601 weeks; 28 December is always in the final week

Days in February28

1 January fell on aThursday

31 December fell on aThursday

Century51st century

Decade5000s

Chinese zodiacSnake

Easter Sunday19 April

Months of 5001

January31 days, starts Thursday

February28 days, starts Sunday

March31 days, starts Sunday

April30 days, starts Wednesday

May31 days, starts Friday

June30 days, starts Monday

July31 days, starts Wednesday

August31 days, starts Saturday

September30 days, starts Tuesday

October31 days, starts Thursday

November30 days, starts Sunday

December31 days, starts Tuesday

Time references

These values depend on today’s date and change daily.

Unix timestamp at the start95,649,120,000

Unix timestamp at the end95,680,655,999

Years from now2,975 years from now

Days from today1,086,344 days to 1 January

The number 5001

As a number5,001

In wordsfive thousand and one

Roman numeralsNot defined above 3,999

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Neighbouring years

Key dates

Also reads as

#550000 (colour)

#550000
Red
Dark
Nearest: Maroon

#550000 is a red with RGB values 85, 0, 0 and HSL 0°, 100%, 17%. It is a dark colour, so white text on it reaches 15.1:1 contrast (AAA for normal text). The nearest named colour is Maroon.

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Colour values

#550000#550000

HEX#550000

HEX (short)#500

RGBrgb(85, 0, 0)

RGB (0–1)0.3333, 0, 0

RGB percentages33.3%, 0%, 0%

HSLhsl(0, 100%, 16.7%)

HSV / HSBhsv(0, 100%, 33.3%)

CMYK0%, 100%, 100%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,570,560

CSS custom property--colour: #550000;

Brightness & contrast

Relative luminance0.01931WCAG 2.x, 0 is black and 1 is white

Perceived brightness46.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.15:1

Contrast with white15.15:1WCAG normal text: AAA

Contrast with black1.39:1WCAG normal text: Fail

Greyscale equivalent#121212

Inverted#AAFFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F1A00no red cones; affects about 1% of men; ΔE 39.4 from the original

Deuteranopia#332C00no green cones; the most common form, about 1% of men; ΔE 38.6 from the original

Tritanopia#5F0001no blue cones; rare, and affects men and women equally; ΔE 5 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text15.15:1WCAG large text: AAA

Contrast with black, large text1.39:1WCAG large text: Fail

Named colours

Maroon · ΔE 21.5 Dark red · ΔE 26.6 Brown · ΔE 27.2 Saddle brown · ΔE 29.9 Sienna · ΔE 31.8 Firebrick · ΔE 34.2

Nearest named CSS colourMaroon (#800000)ΔE 21.52, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#005555

Analogous#55002A, #552A00

Triadic#005500, #000055

Split complementary#00552A, #002A55

Tetradic#2A5500, #005555, #2A0055

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FF2222

Lighter +30%#EE0000

Lighter +20%#BB0000

Lighter +10%#880000

Darker −10%#220000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#550000

Less saturated −25%#4A0B0B

Channel breakdown

R85

Red85 (33.3%)

Green0 (0%)

Blue0 (0%)

Hue0°

Saturation (HSL)100%

Lightness16.67%

Dominant channelRed

Hex per channelR 55 · G 00 · B 00

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5,001

Number properties

Factors & divisors

Arithmetic

Representations

Nearest landmarks

Powers & multiples

Divisibility tests

Collatz (3n + 1) trajectory

As a percentage & fraction

Read another way

Keep nerding

Neighbouring numbers

Derived from 5,001

Nearby primes

Other readings

5001 (year)

Structure of the year

Months of 5001

Time references

The number 5001

Keep nerding

Neighbouring years

Key dates

#550000 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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