Properties of the Number 22801

Twenty-Two Thousand Eight Hundred One

Basics

Value: 22800 → 22801 → 22802

Parity: odd

Prime: No

Previous Prime: 22787

Next Prime: 22807

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 151 ²

Divisors: 1, 151, 22801

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100100010001

Octal: 54421

Duodecimal: 11241

Hexadecimal: 5911

Square: 519885601

Square Root: 151

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

Squares of primes. A1248

a(n) = (6·n + 1)². A16922

Sum of legs of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse. A89552

a(n) = (5·n + 1)². A16862

a(n) = (10·n + 1)². A17282

a(n) = (11·n + 8)². A17486

Perfect squares which are neither the sum nor the difference of two primes. A106573

Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n} having exactly k blocks that contain both odd and even entries (0<=k<=floor(n/2)). A124418

Squares that become prime when their most significant (or leftmost) digit is removed. A225873

Numbers n such that ∑_d∣n τ(d) = ∏_d∣n τ(d). A280076