Properties of the Number 45105

Forty-Five Thousand One Hundred Five

Basics

Value: 45104 → 45105 → 45106

Parity: odd

Prime: No

Previous Prime: 45083

Next Prime: 45119

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 31 × 97

Divisors: 1, 3, 5, 15, 31, 93, 97, 155, 291, 465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011000000110001

Octal: 130061

Duodecimal: 22129

Hexadecimal: b031

Square: 2034461025

Square Root: 212.37937752992875

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

Composite squarefree integers for which the sum of the squares of their factors is a square. A379780

a(n+1) = n·a(n) + a(n-1) with a(0)=0, a(1)=1. A1040

a(n) = (n+1)*a(n-1) + a(n-2), with a(0)=0, a(1)=1. A58307

a(0)=a(1)=1, a(n)=a(n-2)+(n+1)*a(n-1). A58279

Triangle read by rows: T(n,k) = (n-1)*T(n-1,k) + T(n-2,k), with T(n,n-1)=1, T(n,n-2)=n-2, for n >= 1, 0 <= k <= n-1. A228340

Third diagonal (T(n,2)) of triangle in A228340. A228341

Numbers whose base-4 representation contains exactly four 1's and no 2's. A45105