Properties of the Number 75205

Seventy-Five Thousand Two Hundred Five

Basics

Value: 75204 → 75205 → 75206

Parity: odd

Prime: No

Previous Prime: 75193

Next Prime: 75209

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 13 ² × 89

Divisors: 1, 5, 13, 65, 89, 169, 445, 845, 1157, 5785

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010010111000101

Octal: 222705

Duodecimal: 37631

Hexadecimal: 125c5

Square: 5655792025

Square Root: 274.23530042647684

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

a(n) = (n⁸ - 60·n⁶ + 90·n⁵ + 1160·n⁴ - 3204·n³ - 5349·n² + 26586·n - 23760)/24. A135923

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 825", based on the 5-celled von Neumann neighborhood. A273581

Beach-Williams Pell numbers of type pqrs (p,q,r,s primes). A212080

Number of polyominoes with n cells that tile the plane isohedrally. A75205