Properties of the Number 57105

Fifty-Seven Thousand One Hundred Five

Basics

Value: 57104 → 57105 → 57106

Parity: odd

Prime: No

Previous Prime: 57097

Next Prime: 57107

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 5 × 47

Divisors: 1, 3, 5, 9, 15, 27, 45, 47, 81, 135

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101111100010001

Octal: 157421

Duodecimal: 29069

Hexadecimal: df11

Square: 3260981025

Square Root: 238.96652485233156

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

Number of (n+3)X10 binary arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock. A188103

First differences of A140495. A142716

Triangle of numbers (when unsigned) related to congruum problem: T(n,k)=k²+2nk-n² with n>k>0 and starting at T(2,1)=1. A57105

Number of n X 4 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A300542