Properties of the Number 90255

Ninety Thousand Two Hundred Fifty-Five

Basics

Value: 90254 → 90255 → 90256

Parity: odd

Prime: No

Previous Prime: 90247

Next Prime: 90263

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 11 × 547

Divisors: 1, 3, 5, 11, 15, 33, 55, 165, 547, 1641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000010001111

Octal: 260217

Duodecimal: 44293

Hexadecimal: 1608f

Square: 8145965025

Square Root: 300.4246993840553

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

Combinatorial triangle !n. This table read by rows gives the coefficients of general sum formulas of n-th left factorials (A003422). The k-th row (k>=1) contains T(i,k) for i=1 to 2·k and k=1 to n-2, where T(i,k) satisfies !n = n + ∑_k=1..n-2 ∑_i=1..2·k T(i,k) * C(n-k-1,i). A102639

a(n) = n!*∑_k=1..n μ(k)/k, where μ(k) is the Möbius function. A68337

A090254(n)^1/n. A90255