Properties of the Number 57225

Fifty-Seven Thousand Two Hundred Twenty-Five

Basics

Value: 57224 → 57225 → 57226

Parity: odd

Prime: No

Previous Prime: 57223

Next Prime: 57241

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 7 × 109

Divisors: 1, 3, 5, 7, 15, 21, 25, 35, 75, 105

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101111110001001

Octal: 157611

Duodecimal: 29149

Hexadecimal: df89

Square: 3274700625

Square Root: 239.2174742781137

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

Numbers k such that A007088(k) == 1 (mod k). A339567

a(0)=a(1)=1. a(n) = the multiple of n which is > a(n-1)+a(n-2) and is <= a(n-1)+a(n-2)+n. A128034

E.g.f.: sec(arcsinh(x)+log(x+1)) = 1 + 4/2!*x² - 6/3!*x³ + 91/4!*x⁴ - 470/5!*x⁵ + ... A13079

Numbers k such that (Product of first k Mersenne prime exponents) - 1 is prime. A57225