Properties of the Number 81254

Eighty-One Thousand Two Hundred Fifty-Four

Basics

Value: 81253 → 81254 → 81255

Parity: even

Prime: No

Previous Prime: 81239

Next Prime: 81281

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 40627

Divisors: 1, 2, 40627, 81254

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110101100110

Octal: 236546

Duodecimal: 3B032

Hexadecimal: 13d66

Square: 6602212516

Square Root: 285.0508726525846

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 nX5 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302160

Numbers m such that the decimal digits of m are exactly the same as those of all the indices corresponding to the prime factors of m. A287916

Numbers k such that A081252(m)/m² has a local maximum for m = k. A81254

Number of nX5 0..1 arrays with every element equal to 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A298954