Properties of the Number 56641

Fifty-Six Thousand Six Hundred Forty-One

Basics

Value: 56640 → 56641 → 56642

Parity: odd

Prime: No

Previous Prime: 56633

Next Prime: 56659

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 × 4357

Divisors: 1, 13, 4357, 56641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101110101000001

Octal: 156501

Duodecimal: 28941

Hexadecimal: dd41

Square: 3208202881

Square Root: 237.9936973955403

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

Denominators of continued fraction convergents to sqrt(7). A41009

Denominators of the continued fraction convergents to sqrt(7)/2. A294973

Expansion of (1+31·x-2·x²-2·x³)/(1-16·x²+x⁴). A77397

y-values in the solution to x² - 7·y² = -3. A202638

Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero. A250321

Strong pseudoprimes to base 86. A20312

Number of compositions (ordered partitions) of n into multiplicatively perfect numbers (A007422). A282569

Expansion of ∑_n>=1 q^n*(n-1) / (1-q)ⁿ. A321481

Numbers k(n) used for Cassels's Markoff forms MF(n) corresponding to the conjectured unique Markoff triples MT(n) with maximal entry m(n) = A002559(n), for n >= 1. A305310

Least positive integer k for which (b+1)^k is not palindromic in base b, b = 2, 3, 4, ... A56641