Number
500
- Positive
- Even
- Composite
- 3 digits
500 is an even 3-digit integer and a composite number. It has 12 divisors and a digital root of 5.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value500
Digit count3
Digit sum5
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 5^3
Distinct prime factors22, 5
Number of divisors12
Sum of divisors σ(n)1,092
Aliquot sum592sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)200integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 50012 in total
Arithmetic
Representations
Decimal500
Binary1111101009 bits
Octal764
Hexadecimal1F4
Base 36DW
Roman numeralD
In wordsfive hundred
Ordinalfive hundredth
Scientific notation5 × 10^2
Engineering notation500
Nearest landmarks
Powers & multiples
500 to the power 2250,000
500 to the power 3125,000,000
500 to the power 462,500,000,000
500 to the power 531,250,000,000,000
First ten multiples500, 1,000, 1,500, 2,000, 2,500, 3,000, 3,500, 4,000, 4,500, 5,000
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 3
Divisible by 8No, remainder 4
Divisible by 9No, remainder 5
Divisible by 10Yes
Divisible by 11No, remainder 5
Divisible by 12No, remainder 8
Divisible by 100Yes
Collatz (3n + 1) trajectory
Steps to reach 1110the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps500 → 250 → 125 → 376 → 188 → 94 → 47 → 142 → 71 → 214 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage50,000%
500% as a decimal5
500% of 100500
500% of 1,0005,000
As a fraction of 100500/100
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Derived from 500
Other readings
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.
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
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
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#005555
Analogous#55002A, #552A00
Triadic#005500, #000055
Split complementary#00552A, #002A55
Tetradic#2A5500, #005555, #2A0055
Tints, shades & saturation
Channel breakdown
R85
G0
B0
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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Also reads as
HTTP 500 Internal Server Error (http status)
- 500 Internal Server Error
- Server error
- RFC 9110
HTTP 500 Internal Server Error is a server error response: the server hit an unexpected condition. It is defined in RFC 9110, and the server failed to fulfil an apparently valid request.
What it means
Status code500
Reason phraseInternal Server Erroradvisory only; clients must not depend on the wording
Class5xx Server error
MeaningThe server hit an unexpected condition
Defined inRFC 9110
Cacheable by defaultNoonly cacheable if the response says so explicitly
How clients behave
Indicates an errorYes
Whose faultThe server
Body expectedUsually
Safe to retry automaticallyNo
The 5xx class
Class meaningThe server failed to fulfil an apparently valid request
Codes in this class11
Lowest in class500
Highest in class511
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