Properties of the Number 55981

Fifty-Five Thousand Nine Hundred Eighty-One

Basics

Value: 55980 → 55981 → 55982

Parity: odd

Prime: No

Previous Prime: 55967

Next Prime: 55987

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 17 × 37 × 89

Divisors: 1, 17, 37, 89, 629, 1513, 3293, 55981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101010101101

Octal: 155255

Duodecimal: 28491

Hexadecimal: daad

Square: 3133872361

Square Root: 236.60304309116566

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Smallest palindromic numbers of length 4 in two bases differing by n. A216843

Number of connected ordered 2-element multiantichains on a labeled n-set. A94729

Smallest k such that trinomial x^A001153(n) + x^k + 1 over GF(2) is primitive. A74743

Positive numbers y such that y² is of the form x²+(x+119)² with integer x. A156650

Smallest number that can be written in exactly n ways as sum of two quarter-squares. A240952

Expansion of 1/(1-x³-x⁴-x⁵-x⁶-x⁷-x⁸-x⁹). A17822

Strong pseudoprimes to base 55. A20281

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}. A150810

a(n) = ceiling(n!/d(n!)). A55981

a(n) = n + A007978(n). A346563