Properties of the Number 51810

Fifty-One Thousand Eight Hundred Ten

Basics

Value: 51809 → 51810 → 51811

Parity: even

Prime: No

Previous Prime: 51803

Next Prime: 51817

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 11 × 157

Divisors: 1, 2, 3, 5, 6, 10, 11, 15, 22, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101001100010

Octal: 145142

Duodecimal: 25B96

Hexadecimal: ca62

Square: 2684276100

Square Root: 227.61810121341404

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 n that raised to the powers from 1 to k (with k>=1) are multiples of the sum of their digits (and n raised to k+1 must not be such a multiple). Case k=14. A135199

Values of the difference d for 6 primes in geometric-arithmetic progression with the minimal sequence {7·7^j + j·d}, j = 0 to 5. A209205

Values of the difference d for 7 primes in geometric-arithmetic progression with the minimal sequence {7·7^j + j·d}, j = 0 to 6. A209206

a(n) = floor(sqrt(5·2ⁿ)). A221942

G.f.: [∑_n>=0 x^n*(n+1/2) * (1+x)ⁿ ]³. A182152

Number of nX4 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. A298083

Squarefree numbers sandwiched between two brilliant numbers. A85706

Coordination sequence for root lattice B₁₂. A22154

Numbers with nonzero multiplicative digital root 8. A51810