Properties of the Number 51775

Fifty-One Thousand Seven Hundred Seventy-Five

Basics

Value: 51774 → 51775 → 51776

Parity: odd

Prime: No

Previous Prime: 51769

Next Prime: 51787

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 19 × 109

Divisors: 1, 5, 19, 25, 95, 109, 475, 545, 2071, 2725

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101000111111

Octal: 145077

Duodecimal: 25B67

Hexadecimal: ca3f

Square: 2680650625

Square Root: 227.54120505965508

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

Number of n-celled polyominoes with exactly 3 holes. A89455

a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units with a trapezoid filled by 3 trapezoids. A391204

Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical or antidiagonal neighbor, and containing the value n(n+1)/2-2. A211924

Numbers k such that k⁶ == 1 (mod 7⁵). A56103

Partial sums of the tricapped prism numbers A005920. A187673

Table T(n,m) = Nim-product of n and m, read by antidiagonals, for n >= 0, m >= 0. A51775