Properties of the Number 51641

Fifty-One Thousand Six Hundred Forty-One

Basics

Value: 51640 → 51641 → 51642

Parity: odd

Prime: No

Previous Prime: 51637

Next Prime: 51647

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 113 × 457

Divisors: 1, 113, 457, 51641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100110111001

Octal: 144671

Duodecimal: 25A75

Hexadecimal: c9b9

Square: 2666792881

Square Root: 227.24656213021134

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

Markoff (or Markov) numbers: union of positive integers x, y, z satisfying x² + y² + z² = 3·x*y·z. A2559

Alternative version of the Markov tree A327345. A368546

Irregular triangle read by rows: Maximal numbers of the Markoff triples at level L of the Markoff tree, with members of the triples ordered increasingly. A327345

Composite Markoff numbers. A256395

Second member m₂(n) of the Markoff triple MT(n) with largest member m(n) = A002559(n), and smallest member m₁(n) = A305313(n), for n >= 1. These triples are conjectured to be unique. A305314

Sums of groups in A075639. A75640

The odd Markoff numbers. A388291

Brilliant numbers k such that 2k+1 is also brilliant. A85649

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 865", based on the 5-celled von Neumann neighborhood. A273701

Non-Fibonacci Markoff numbers. A111032