Properties of the Number 51139

Fifty-One Thousand One Hundred Thirty-Nine

Basics

Value: 51138 → 51139 → 51140

Parity: odd

Prime: No

Previous Prime: 51137

Next Prime: 51151

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 11 × 4649

Divisors: 1, 11, 4649, 51139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100011111000011

Octal: 143703

Duodecimal: 25717

Hexadecimal: c7c3

Square: 2615197321

Square Root: 226.139337577521

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

Divisors of 10¹⁴ - 1. A106305

Triangle, read by rows, defined by: T(n,k) = (k+1)*T(n,k+1) - ∑_j=1..n-k-1 T(j,0)*T(n,j+k+1) for n>k with T(n,n)=1 for n>=0. A117396

Number of pairs (p,q) of partitions of n such that the set of parts in q is a subset of the set of parts in p. A369704

Column 3 of triangle A117396. A117397

Minimal positive integer such that the smallest possible sum of digits of its multiple equals n. A173443

Numbers k such that (299·10^k + 1)/3 is prime. A294911

a(n) = A000994(n+2) - A000995(n+2). A51139