Properties of the Number 51805

Fifty-One Thousand Eight Hundred Five

Basics

Value: 51804 → 51805 → 51806

Parity: odd

Prime: No

Previous Prime: 51803

Next Prime: 51817

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 13 × 797

Divisors: 1, 5, 13, 65, 797, 3985, 10361, 51805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101001011101

Octal: 145135

Duodecimal: 25B91

Hexadecimal: ca5d

Square: 2683758025

Square Root: 227.6071176391459

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

Numbers that are the sum of four third powers in exactly eight ways. A345153

Numbers that define integer Heronian triangles [a(n), prime(a(n)), A068968(n)] with area A068969(n). A68967

G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 2·x * A(x³))). A390660

Numbers with nonzero multiplicative digital root 3. A51805