Properties of the Number 56576

Fifty-Six Thousand Five Hundred Seventy-Six

Basics

Value: 56575 → 56576 → 56577

Parity: even

Prime: No

Previous Prime: 56569

Next Prime: 56591

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁸ × 13 × 17

Divisors: 1, 2, 4, 8, 13, 16, 17, 26, 32, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101110100000000

Octal: 156400

Duodecimal: 288A8

Hexadecimal: dd00

Square: 3200843776

Square Root: 237.8570999570961

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

a(n) = (6·n)!/((4·n)!*n!) * (n/2)!/(3·n/2)!. A347856

Numbers whose product of prime indices is twice their sum of prime indices. A326151

a(n) = ∑_{1 <= i, j <= n} gcd(i, j, n)³. A368743

Period of the continued fraction for sqrt(2ⁿ-1). A59866

a(n) = 49·n² - 2·n. A157362

Eighth column (m=7) of (1,3)-Pascal triangle A095660. A95663

Inverse Euler transform of A122082. A318869

Number of different words that can be formed from an n X n grid of letters, reading horizontally, vertically or diagonally. A34720

A unitary φ reciprocal amicable number: consider two different numbers r, s which satisfy the following equation for some integer k: uphi(r) = uphi(s) = (1/k) * r·s / (r-s); or equivalently, 1/uphi(r) = 1/uphi(s) = k * (1/s - 1/r); sequence gives s numbers. A80767

a(n) = ∑_{k=0..floor(n/2)} (-1)^k * binomial(2·n-2·k-3,n-2·k). A390680