Properties of the Number 56561

Fifty-Six Thousand Five Hundred Sixty-One

Basics

Value: 56560 → 56561 → 56562

Parity: odd

Prime: No

Previous Prime: 56543

Next Prime: 56569

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 163 × 347

Divisors: 1, 163, 347, 56561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101110011110001

Octal: 156361

Duodecimal: 28895

Hexadecimal: dcf1

Square: 3199146721

Square Root: 237.82556632961058

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 permutations of 1..n with displacements restricted to {-5,-4,0,1,2,3}. A189592

Pisot sequence T(7,10), a(n) = floor(a(n-1)²/a(n-2)). A20752

Semiprimes formed by concatenating n, n, and 1 for n = 1, 2, 3,.... A210711

Numbers n such that n² + n + 41 (known as Euler's polynomial) is prime. A56561

Number of (n+1)X(4+1) 0..1 arrays with every element equal to some horizontal, vertical, diagonal or antidiagonal neighbor, with top left element zero. A231953