Properties of the Number 51980

Fifty-One Thousand Nine Hundred Eighty

Basics

Value: 51979 → 51980 → 51981

Parity: even

Prime: No

Previous Prime: 51977

Next Prime: 51991

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 23 × 113

Divisors: 1, 2, 4, 5, 10, 20, 23, 46, 92, 113

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101100001100

Octal: 145414

Duodecimal: 260B8

Hexadecimal: cb0c

Square: 2701920400

Square Root: 227.99122790142607

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

Denominators of continued fraction convergents to sqrt(203). A41377

Number of tilings of a 4 X n rectangle using monominoes and trominoes of any shape. A270064

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 15. A51980

a(0) = 3; a(n) = smallest k > 1 such that 1 + a(0)*a(1)*...*a(n-1)*k is composite. A307486