Properties of the Number 51398

Fifty-One Thousand Three Hundred Ninety-Eight

Basics

Value: 51397 → 51398 → 51399

Parity: even

Prime: No

Previous Prime: 51383

Next Prime: 51407

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 31 × 829

Divisors: 1, 2, 31, 62, 829, 1658, 25699, 51398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100011000110

Octal: 144306

Duodecimal: 258B2

Hexadecimal: c8c6

Square: 2641754404

Square Root: 226.7112701212712

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

a(1) = 1; a(n+1) = ∑_k=1..n a(n)/gcd(a(k),a(n)). A286946

S[A002808(n)] where S[] is Boris Stechkin's function (A055004) and A002808(n) are the composites. A63483

Partial sums of A253089. A255601

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 179", based on the 5-celled von Neumann neighborhood. A270624

a(n) = -(n-3)*a(n-1) + 2*(n-2)². A51398