Properties of the Number 2566

Two Thousand Five Hundred Sixty-Six

Basics

Value: 2565 → 2566 → 2567

Parity: even

Prime: No

Previous Prime: 2557

Next Prime: 2579

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 1283

Divisors: 1, 2, 1283, 2566

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000000110

Octal: 5006

Duodecimal: 159A

Hexadecimal: a06

Square: 6584356

Square Root: 50.65570056765576

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

Number of integer partitions of n whose distinct parts are connected. A304716

Numbers that are the sum of 5 positive 5th powers. A3350

Numbers k such that (10^2k+1 - 6·10^k - 1)/3 is prime. A183174

Sum of 11 positive 9th powers. A4800

Integer part of decimal 'base-2 looking' numbers divided by their actual base-2 values (denominator of a(n) is n, numerator is n written in binary but read in decimal). A32532

Composite and every divisor (except for 1) contains the digit 2. A62664

Expansion of ∏_k>=1 (1 + x^2·k-1)^2·k-1. A262736

a(n) = Fibonacci(n) - n. A65220

Expansion of ∏_k>=1 (1 - x^2·k-1)^2·k-1. A285069

Number of threshold functions on n X n grid. A114146