Properties of the Number 45981

Forty-Five Thousand Nine Hundred Eighty-One

Basics

Value: 45980 → 45981 → 45982

Parity: odd

Prime: No

Previous Prime: 45979

Next Prime: 45989

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 13 × 131

Divisors: 1, 3, 9, 13, 27, 39, 117, 131, 351, 393

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011001110011101

Octal: 131635

Duodecimal: 22739

Hexadecimal: b39d

Square: 2114252361

Square Root: 214.4318073421012

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) = ∑_d∣n σ(n/d)*d³. A27847

Number of ways to color edges of a tetrahedron using <= n colors. A46023

a(n) = ∑_d∣n d³*A000593(n/d). A288419

Indices of primes in the tribonacci-like sequence A214827. A242324

a(n) = ∑_k=1..n (-1)^k+1 * floor((n/k)ⁿ). A350224

a(1)=1, a(2)=2, a(n)=a(n-1)+floor(a(n-2)*a(n-1)/(a(n-2)+a(n-1))). A173090

Numbers n such that n | 9ⁿ + 8ⁿ + 7ⁿ + 6ⁿ + 5ⁿ + 4ⁿ. A57260

Partial sums of A051941. A136105

Array read by descending antidiagonals: A(n,k) is the number of oriented colorings of the edges of a regular n-dimensional simplex using up to k colors. A327083

Describe all the previous terms!. A45981