Properties of the Number 4520

Four Thousand Five Hundred Twenty

Basics

Value: 4519 → 4520 → 4521

Parity: even

Prime: No

Previous Prime: 4519

Next Prime: 4523

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 113

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 113, 226

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1000110101000

Octal: 10650

Duodecimal: 2748

Hexadecimal: 11a8

Square: 20430400

Square Root: 67.23094525588644

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

Place n equally-spaced points around a circle and join every pair of points by a chord; this divides the circle into a(n) regions. A6533

The minimum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 0 to n, and each number in a higher row is the sum of the two numbers directly below it. A189391

Lower left-hand x-coordinate for 3 X 3 invisible forest with 0 < x < y. A325604

Number of integer compositions of n that are the first sums of some composition with all parts > 1. A391235

Triangle T(n,k) of k-block tricoverings of an n-set (n >= 3, k >= 4). A60487

Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w<x+y. A182260

Array read by antidiagonals: T(n,k) is the number of Hamiltonian cycles in the stacked prism graph P_n X C_k, n >= 1, k >= 2. A359855

Related to label-increasing forests with branching bounded by 3. A297197

Number of Hamiltonian cycles in C₅ X P_n. A3731

Sum of terms in n-th group in A075352. A75356