Properties of the Number 81187

Eighty-One Thousand One Hundred Eighty-Seven

Basics

Value: 81186 → 81187 → 81188

Parity: odd

Prime: No

Previous Prime: 81181

Next Prime: 81197

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 19 × 4273

Divisors: 1, 19, 4273, 81187

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110100100011

Octal: 236443

Duodecimal: 3AB97

Hexadecimal: 13d23

Square: 6591328969

Square Root: 284.9333255342379

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) = 225·n² - 2·n. A158226

5th binomial transform of (1,0,1,0,1,...), A059841. A81187