Number
53
53 is a prime, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 2
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 2
- σ(n) — sum of divisors
- 54
Primality
53 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
Representations
- In words
- fifty-three
- Ordinal
- 53rd
- Roman numeral
- LIII
- Binary
- 110101
- Octal
- 65
- Hexadecimal
- 35
Also seen as
Prime neighborhood
ASCII character
As an ASCII codepoint, 53 is 5. Printable ASCII character 5.
Network port
TCP/UDP port 53 is the well-known port for DNS — Domain Name System.
Hex color
#000035
RGB(0, 0, 53)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.53.