Properties of the Number 81177

Eighty-One Thousand One Hundred Seventy-Seven

Basics

Value: 81176 → 81177 → 81178

Parity: odd

Prime: No

Previous Prime: 81173

Next Prime: 81181

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 27059

Divisors: 1, 3, 27059, 81177

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100011001

Octal: 236431

Duodecimal: 3AB89

Hexadecimal: 13d19

Square: 6589705329

Square Root: 284.9157770289318

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

Inverse of Riordan array ((1-x)(1-x²)(1-x³)/(1-x⁶), x(1-x)(1-x²)(1-x³)/(1-x⁶)). A185967

Number of nX6 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing. A229443

T(n,k)=Number of nXk 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing. A229445

Values of r in the terms of A067688. A81177