Properties of the Number 22555

Twenty-Two Thousand Five Hundred Fifty-Five

Basics

Value: 22554 → 22555 → 22556

Parity: odd

Prime: No

Previous Prime: 22549

Next Prime: 22567

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 13 × 347

Divisors: 1, 5, 13, 65, 347, 1735, 4511, 22555

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100000011011

Octal: 54033

Duodecimal: 11077

Hexadecimal: 581b

Square: 508728025

Square Root: 150.1832214330216

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 using only the digits 2 and 5, that are both curved and straight. A72961

Numbers k such that 9·2^k - 1 is prime. A2236

Partial sums of A151791. A151792

Number of partitions p of n such that (number of even numbers in p) >= (number of odd numbers in p). A241639

a(n) = sum(floor(sqrt(Bell(k))),k=0..n). A192571

Structured disdyakis dodecahedral numbers (vertex structure 5). A100163

Lexicographically earliest sequence of increasing numbers whose digits satisfy the "Fractal Jump" rule using only the digits 2 and 5: keep the first digit "d" of the sequence, then jump over the next "d" digits and keep the digit "e" on which you have landed. Jump now over the next "e" digits and keep the digit "f" on which you have landed, etc. The succession "def..." of kept digits is the sequence itself. A105647

Number of 3 X 3 symmetric matrices with row and column sums <= n. A244865

Numbers k such that k and k² use only the digits 0, 2, 5, 7 and 8. A136916

G.f. (1-x)/(2·sqrt(5·x² + 2·x + 1)) - 1/2. A249908