Properties of the Number 56745

Fifty-Six Thousand Seven Hundred Forty-Five

Basics

Value: 56744 → 56745 → 56746

Parity: odd

Prime: No

Previous Prime: 56737

Next Prime: 56747

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 13 × 97

Divisors: 1, 3, 5, 9, 13, 15, 39, 45, 65, 97

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101110110101001

Octal: 156651

Duodecimal: 28A09

Hexadecimal: dda9

Square: 3219995025

Square Root: 238.2120903732638

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

Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: p(x,n) = ((x+r)ⁿ - (x+s)ⁿ)/(r - s), where r = 3 and s = 2. A327316

Numbers n such that n-1, n and n+1 can be expressed as a sum of 2 squares in at least 2 ways. A91459

Numbers k such that 4·k + 1 is a perfect cube, sorted by absolute values. A305290

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (composite numbers). A24471

Number of (undirected) paths in the n-helm graph. A292001

a(n) = n*(3^n-1 - 2^n-1). A344215

Numbers k such that k | 6^k + 5^k + 4^k + 3^k + 2^k + 1^k. A56745