Properties of the Number 51988

Fifty-One Thousand Nine Hundred Eighty-Eight

Basics

Value: 51987 → 51988 → 51989

Parity: even

Prime: No

Previous Prime: 51977

Next Prime: 51991

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 41 × 317

Divisors: 1, 2, 4, 41, 82, 164, 317, 634, 1268, 12997

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101100010100

Octal: 145424

Duodecimal: 26104

Hexadecimal: cb14

Square: 2702752144

Square Root: 228.00877176108818

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

Super-5 Numbers (5·n⁵ contains substring '55555' in its decimal expansion). A32745

Numbers k such that the product of distinct digits of k equals the sum of the prime divisors of k. A357262

Number of permutations of floor(i·7/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique. A147938

Number of permutations of floor(i·7/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. A147947

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 23. A51988