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Properties of the Number 45520

Forty-Five Thousand Five Hundred Twenty

Basics

Value: 45519 → 45520 → 45521

Parity: even

Prime: No

Previous Prime: 45503

Next Prime: 45523

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 4 × 5 × 569

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011000111010000

Octal: 130720

Duodecimal: 22414

Hexadecimal: b1d0

Square: 2072070400

Square Root: 213.3541656495134

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

Numbers k such that σ(k+1) divides σ(k), where σ(k) is the sum of positive divisors of k. A58073
Numbers k such that σ(k) = 2*σ(k+1). A163193
Triangle of numbers obtained by inverting infinite matrix defined in A059369, read from right to left. A59370
Let b(n) be the number of permutations {c1..cn} of {1..n} for which c1 - c2 + ... + (-1)n-1*cn are triangular numbers (A000217). Then a(n) = b(n)/A010551(n). A294811
Second diagonal of triangle in A059370. A59373
Numbers k such that k and k2 use only the digits 0, 2, 4, 5 and 7. A136899
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207263
Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207267
Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically. A207273
Numbers k such that Bernoulli number Bk has denominator 230010. A295593