Properties of the Number 91189

Ninety-One Thousand One Hundred Eighty-Nine

Basics

Value: 91188 → 91189 → 91190

Parity: odd

Prime: No

Previous Prime: 91183

Next Prime: 91193

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 7 ² × 1861

Divisors: 1, 7, 49, 1861, 13027, 91189

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010000110101

Octal: 262065

Duodecimal: 44931

Hexadecimal: 16435

Square: 8315433721

Square Root: 301.9751645417219

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 φ(k) = φ(k+1). A1274

Primes of the form 20·R_k + 1, where R_k is the repunit (A002275) of length k. A91189