Properties of the Number 56721

Fifty-Six Thousand Seven Hundred Twenty-One

Basics

Value: 56720 → 56721 → 56722

Parity: odd

Prime: No

Previous Prime: 56713

Next Prime: 56731

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 37 × 73

Divisors: 1, 3, 7, 21, 37, 73, 111, 219, 259, 511

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101110110010001

Octal: 156621

Duodecimal: 289A9

Hexadecimal: dd91

Square: 3217271841

Square Root: 238.16170976880395

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 integer compositions of n whose leaders of strictly decreasing runs are distinct. A374761

Product of all distinct nonzero numbers that can be formed from the digits of n. A61497

Numbers k such that 8·10^k-1 is prime. A56721