Number
-1,521
- Negative
- Odd
- Perfect square
- 4 digits
-1,521 is an odd 4-digit integer and the negative of 1,521. It has 9 divisors and a digital root of 9.
Number properties
ParityOddnot divisible by 2
SignNegative
Absolute value1,521
Digit count4
Digit sum9
Digital root9repeated digit sum
PalindromicNoreads differently backwards
Perfect squareYes, 39²
Factors & divisors
Prime factorisation−1 × 3^2 × 13^2
Distinct prime factors23, 13
Number of divisors9
Sum of divisors σ(n)2,379
SquarefreeNohas a repeated prime factor
All divisors1, 3, 9, 13, 39, 117, 169, 507, 1,5219 in total
Arithmetic
Representations
Decimal-1,521
Binary1011111000111 bits
Octal2761
Hexadecimal5F1
Base 36169
In wordsminus one thousand, five hundred and twenty-one
Ordinalminus one thousand, five hundred and twenty-first
Scientific notation-1.521 × 10^3
Engineering notation-1.521 × 10^3
Powers & multiples
-1,521 to the power 22,313,441
-1,521 to the power 3-3,518,743,761
-1,521 to the power 45,352,009,260,481
-1,521 to the power 5-8,140,406,085,191,601
First ten multiples-1,521, -3,042, -4,563, -6,084, -7,605, -9,126, -10,647, -12,168, -13,689, -15,210
Powers of twoBetween 2^10 (1,024) and 2^11 (2,048)
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 2
Divisible by 8No, remainder 1
Divisible by 9Yes
Divisible by 10No, remainder 1
Divisible by 11No, remainder 3
Divisible by 12No, remainder 9
Divisible by 100No, remainder 21
As a percentage & fraction
As a percentage-152,100%
-1,521% as a decimal-15.21
-1,521% of 100-1,521
-1,521% of 1,000-15,210
As a fraction of 100-1,521/100
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