number.wiki
Number

2,801

2,801 is a prime, odd.

Cousin Prime Deficient Number Prime Squarefree Twin Prime

Properties

Parity
Odd
Digit count
4
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
2,802

Primality

2,801 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 2801
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 2,801)
1 × 2801
First multiples
2,801 · 5,602 · 8,403 · 11,204 · 14,005 · 16,806 · 19,607 · 22,408 · 25,209 · 28,010

Representations

In words
two thousand eight hundred one
Ordinal
2801st
Roman numeral
MMDCCCI
Binary
101011110001
Octal
5361
Hexadecimal
AF1

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 2,797 (gap of 4)
  • Next prime: 2,803 (gap of 2)

Pair status: twin with 2803, cousin with 2797.

Unicode codepoint
U+0AF1
Currency symbol (Sc)

UTF-8 encoding: E0 AB B1 (3 bytes).

Hex color
#000AF1
RGB(0, 10, 241)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.10.241.