Properties of the Number 56536

Fifty-Six Thousand Five Hundred Thirty-Six

Basics

Value: 56535 → 56536 → 56537

Parity: even

Prime: No

Previous Prime: 56533

Next Prime: 56543

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 37 × 191

Divisors: 1, 2, 4, 8, 37, 74, 148, 191, 296, 382

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101110011011000

Octal: 156330

Duodecimal: 28874

Hexadecimal: dcd8

Square: 3196319296

Square Root: 237.77300099044047

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

Numbers k such that σ(k) = 4*φ(k). A68390

Integers n such that σ(n)/φ(n) is a perfect square. A293391

Numbers n such that the arithmetic, geometric and harmonic means of φ(n) and σ(n) are all integers. A65146

6-step Fibonacci sequence starting with (0,0,0,1,0,0). A251707

Numbers of the form x = 2^k*p·q, p,q odd primes, such that σ(x)/φ(x) = 4. A292422

Number of palindromic binary strings of length n having no 6-runs of 1's. A382479

a(n) is the least multiple of n, k·n say, such that φ(k) | σ(k). A15756

Numbers k such that σ(k) = φ(k·bigomega(k)). A68400

Mapping from half-antidiagonal reading of the triangle (as used in A028297) to the column-by-column reading of the triangular tables. A56536