Properties of the Number 51800

Fifty-One Thousand Eight Hundred

Basics

Value: 51799 → 51800 → 51801

Parity: even

Prime: No

Previous Prime: 51797

Next Prime: 51803

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 ² × 7 × 37

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101001011000

Octal: 145130

Duodecimal: 25B88

Hexadecimal: ca58

Square: 2683240000

Square Root: 227.59613353482084

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically. A206889

a(1) = 5, a( n) = prime(a(n-1)) - a(n-1). A179274

Number of n-digit positive integers where all pairs of consecutive digits have a difference of at least 3. A383071

Triangle read by rows: S_B(n,k) = "Type B" Stirling numbers of the second kind. A85483

Expansion of e.g.f.: exp(arcsin(x)*log(x+1)). A12304

Number of nX4 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically. A206885

Number of 5Xn 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically. A206891

Number of sets of 4 distinct collinear points in an n X n permutation array in which leftmost pair has same spacing as rightmost pair. A234471

Number of (n+1) X (7+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings). A235277

Revert transform of (1 + x - x³)/(1 + 2x + 2x²). A49145