Properties of the Number 51670

Fifty-One Thousand Six Hundred Seventy

Basics

Value: 51669 → 51670 → 51671

Parity: even

Prime: No

Previous Prime: 51659

Next Prime: 51673

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 5167

Divisors: 1, 2, 5, 10, 5167, 10334, 25835, 51670

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100100111010110

Octal: 144726

Duodecimal: 25A9A

Hexadecimal: c9d6

Square: 2669788900

Square Root: 227.3103605205887

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 k such that k | 5^k + 5. A15891

a(n) = ∑_k=0..n 4^n-k * binomial(n,k) * binomial(n+4,k). A388414

Numbers k such that k divides 5^k - 5. A123091

Smallest prime that concatenated with all previous terms of sequence forms a prime. A51670

Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of these n·k points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of edges in the resulting planar graph. A367305