Properties of the Number 2551

Two Thousand Five Hundred Fifty-One

Basics

Value: 2550 → 2551 → 2552

Parity: odd

Prime: Yes

Previous Prime: 2549

Next Prime: 2557

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2551

Divisors: 1, 2551

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111110111

Octal: 4767

Duodecimal: 1587

Hexadecimal: 9f7

Square: 6507601

Square Root: 50.50742519669756

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

Central polygonal numbers: a(n) = n² - n + 1. A2061

Primes of the form 1 + n + n² + n³ + ... + n^k, n > 1, k > 1. A85104

Primes whose base-3 representation also is the base-2 representation of a prime. A235265

Numbers obtained by reinterpreting base-2 representation of n in primorial base: a(0) = 0, a(2n) = A276154(a(n)), a(2n+1) = 1 + A276154(a(n)). A276156

Primes of form k² + k + 1. A2383

a(n) = 4·n² - 6·n + 3. A54569

Primes of the form x²+Ny², with N=102. A139643

a(n) is the reverse concatenation of divisors of n. A176558

Euclid-Mullin sequence (A000945) with initial value a(1)=127 instead of a(1)=2. A51335

Numbers k such that (13^k + 5^k)/18 is prime. A128342