Properties of the Number 81193

Eighty-One Thousand One Hundred Ninety-Three

Basics

Value: 81192 → 81193 → 81194

Parity: odd

Prime: No

Previous Prime: 81181

Next Prime: 81197

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 ² × 1657

Divisors: 1, 7, 49, 1657, 11599, 81193

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100101001

Octal: 236451

Duodecimal: 3ABA1

Hexadecimal: 13d29

Square: 6592303249

Square Root: 284.9438541186667

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-node simple unicyclic graphs. A236570

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (1, 0, -1), (1, 1, -1), (1, 1, 1)}. A149679

a(n) = 6·a(n-1)-8·a(n-2) for n>1, a(0)=1, a(1)=9. A81193