Properties of the Number 51813

Fifty-One Thousand Eight Hundred Thirteen

Basics

Value: 51812 → 51813 → 51814

Parity: odd

Prime: No

Previous Prime: 51803

Next Prime: 51817

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 19 × 101

Divisors: 1, 3, 9, 19, 27, 57, 101, 171, 303, 513

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101001100101

Octal: 145145

Duodecimal: 25B99

Hexadecimal: ca65

Square: 2684586969

Square Root: 227.62469110357952

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

Row sums of triangle A137629. A137630

a(0) = 0, and for n > 0, (a(n)) gives the indices n for which d(n) < d(k) for k < n, where d is the difference sequence of (cos k + sin k). A299640

Number of n-digit numbers with nonzero multiplicative digital root 2. A51813