Properties of the Number 81546

Eighty-One Thousand Five Hundred Forty-Six

Basics

Value: 81545 → 81546 → 81547

Parity: even

Prime: No

Previous Prime: 81533

Next Prime: 81547

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13591

Divisors: 1, 2, 3, 6, 13591, 27182, 40773, 81546

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111010001010

Octal: 237212

Duodecimal: 3B236

Hexadecimal: 13e8a

Square: 6649750116

Square Root: 285.5626025935469

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 forests of rooted trees with total weight n, where a node at height k has weight 2^k (with root considered to be at height 0). A115593

Smith numbers of order 3. A178213

Numbers k such that k - 13, k + 1, k + 5, k + 7, and k + 13 are all prime. A281937

Number of (n+1)X(n+1) 0..3 symmetric matrices containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in lower triangle row major order. A210817

a(n) is the smallest composite number whose prime divisors (with multiplicity) sum to prime(n); n >= 3. A295185

Smallest prime which is 1 more than the product of n (not necessarily distinct) composite numbers. A81546