Properties of the Number 22564

Twenty-Two Thousand Five Hundred Sixty-Four

Basics

Value: 22563 → 22564 → 22565

Parity: even

Prime: No

Previous Prime: 22549

Next Prime: 22567

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5641

Divisors: 1, 2, 4, 5641, 11282, 22564

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100000100100

Octal: 54044

Duodecimal: 11084

Hexadecimal: 5824

Square: 509134096

Square Root: 150.2131818450032

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 that are a proper substring of the concatenation (with repetition) in increasing order of their prime factors. A378893

Where records occur in A047160. A155765

L.g.f.: ∑_n>=1 (xⁿ/n) / ∏_d∣n (1 - d·xⁿ). A198299

Composite numbers k such that k is a substring of A067599(k). A390475

Smallest Riesel number to base n. A273987

a(n) is obtained by applying the map k -> composite(k) n times, starting at n. A280327

a(1) = 50 and for any n > 0, a(n+1)² is the smallest square that begins with a(n). A309123

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 84 ones. A31852

Numbers k such that the concatenation in increasing order of their prime factors, with multiplicity, is congruent to 1 (mod k). A349705

Composite numbers, not ending with 0, sharing a 3-digit sequence with some of its prime factors. A131523