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Number

461

461 is a prime, odd, a calendar year.

Cousin Prime Deficient Number Prime Sexy Prime Squarefree Twin Prime Year

Properties

Parity
Odd
Digit count
3
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
462

Primality

461 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 461
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 461)
1 × 461
First multiples
461 · 922 · 1,383 · 1,844 · 2,305 · 2,766 · 3,227 · 3,688 · 4,149 · 4,610

Representations

In words
four hundred sixty-one
Ordinal
461st
Roman numeral
CDLXI
Binary
111001101
Octal
715
Hexadecimal
1CD

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 457 (gap of 4)
  • Next prime: 463 (gap of 2)

Pair status: twin with 463, cousin with 457.

Unicode codepoint
Ǎ
U+01CD
Uppercase letter (Lu)

UTF-8 encoding: C7 8D (2 bytes).

Lookup U+01CD on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0001CD
RGB(0, 1, 205)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.205.