number.wiki
Number

55,217

55,217 is a prime, odd.

Cousin Prime Deficient Number Prime Squarefree Twin Prime

Properties

Parity
Odd
Digit count
5
Digit sum
20
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
55,218

Primality

55,217 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 55217
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 55,217)
1 × 55217
First multiples
55,217 · 110,434 · 165,651 · 220,868 · 276,085 · 331,302 · 386,519 · 441,736 · 496,953 · 552,170

Representations

In words
fifty-five thousand two hundred seventeen
Ordinal
55217th
Binary
1101011110110001
Octal
153661
Hexadecimal
D7B1

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 55,213 (gap of 4)
  • Next prime: 55,219 (gap of 2)

Pair status: twin with 55219, cousin with 55213.

Unicode codepoint
U+D7B1
Other letter (Lo)

UTF-8 encoding: ED 9E B1 (3 bytes).

Hex color
#00D7B1
RGB(0, 215, 177)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.215.177.

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number
000055217
Federal Reserve
United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.