Properties of the Number 56040

Fifty-Six Thousand Forty

Basics

Value: 56039 → 56040 → 56041

Parity: even

Prime: No

Previous Prime: 56039

Next Prime: 56041

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 467

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101101011101000

Octal: 155350

Duodecimal: 28520

Hexadecimal: dae8

Square: 3140481600

Square Root: 236.72769166280483

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

Triangle T(n,k), 0 <= k <= n, read by rows defined by: T(0,0)=1, T(n,k)=0 if k < 0 or if k > n, T(n,0) = 4·T(n-1,0) + T(n-1,1), T(n,k) = T(n-1,k-1) + 5·T(n-1,k) + T(n-1,k+1) for k >= 1. A126331

Expansion of e.g.f. exp(5·x)*(BesselI(0,2·x) - BesselI(1,2·x)). A104455

a(n) is the sum of quadratic nonresidues of A002145(n) (the n-th prime == 3 mod 4). A282036

Average of row n of A082259. A82262

Number of regions in an equilateral triangle "frame" of size n. A328526

Numbers k such that in a rotated-square spiral with positive integers (A215468) among k's eight nearest neighbors five or more are primes. A215471

a(n) = 8000·n + 40. A157663

Riordan array (f(x), x·f(x)) where f(x) is the g.f. of A104455. A171589

A(n, k) is the n-th binomial transform of the Catalan sequence (A000108) evaluated at k. Array read by descending antidiagonals for n >= 0 and k >= 0. A271025

Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p . A282726