Properties of the Number 51838

Fifty-One Thousand Eight Hundred Thirty-Eight

Basics

Value: 51837 → 51838 → 51839

Parity: even

Prime: No

Previous Prime: 51829

Next Prime: 51839

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 25919

Divisors: 1, 2, 25919, 51838

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101001111110

Octal: 145176

Duodecimal: 25BBA

Hexadecimal: ca7e

Square: 2687178244

Square Root: 227.6795994374551

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

Magic sums of 4 X 4 semimagic squares composed of consecutive primes. A270864

Numbers k such that A001414(k) is a square and sets a new record for squares. A64463

Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2. A255220

Numbers k such that sum of first k primes divides product of first k primes. A51838

a(n) = g(n,n,n) where g(a, b, c) is defined as follows: if a = 0 or b = 0 or c = 0 then return 1 otherwise return g(a, b, c-1) + g(a, b-1, c) + g(a-1, b, c) + g(a, b-1, c-1) + g(a-1, b, c-1) + g(a-1, b-1, c) + g(a-1, b-1, c-1). A115866