Properties of the Number 56988

Fifty-Six Thousand Nine Hundred Eighty-Eight

Basics

Value: 56987 → 56988 → 56989

Parity: even

Prime: No

Previous Prime: 56983

Next Prime: 56989

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 1583

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 1583

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111010011100

Octal: 157234

Duodecimal: 28B90

Hexadecimal: de9c

Square: 3247632144

Square Root: 238.72159516893313

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

Starting positions of strings of four 9's in the decimal expansion of π. A83643

Numbers k such that 40·R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56681

Starting positions of strings of five 9's in the decimal expansion of π. A83644

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite TON = θ-1 Nan[AlnSi24-nO48] starting with a T3 atom. A19245

Number of weakly connected digraphs on n unlabeled nodes that are not strongly connected. A56988