Number
513
513 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 9
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 800
Primality
Prime factorization: 3 3 × 19
Divisors & multiples
Aliquot sum (sum of proper divisors):
287
Representations
- In words
- five hundred thirteen
- Ordinal
- 513th
- Roman numeral
- DXIII
- Binary
- 1000000001
- Octal
- 1001
- Hexadecimal
- 201
Also seen as
Unicode codepoint
ȁ
U+0201
Lowercase letter (Ll)
UTF-8 encoding: C8 81 (2 bytes).
Hex color
#000201
RGB(0, 2, 1)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.1.