Properties of the Number 51001

Fifty-One Thousand One

Basics

Value: 51000 → 51001 → 51002

Parity: odd

Prime: Yes

Previous Prime: 50993

Next Prime: 51031

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 51001

Divisors: 1, 51001

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100011100111001

Octal: 143471

Duodecimal: 25621

Hexadecimal: c739

Square: 2601102001

Square Root: 225.83400983908513

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

Primes having only {0, 1, 5} as digits. A199325

a(1) = 1, a(2) = 5. For n >= 3, a(n) is found by concatenating the first n-1 terms of the sequence and then dividing the resulting number by a(n-1). A181755

Primes that become squares when prefixed with a 2. A167735

Primes p where the digital sum of p² is equal to 13. A165492

Quintan primes: p = (x⁵ - y⁵)/(x - y). A2649

Expansion of 1/((1-9x)(1-11x)). A16190

For n even a(n) = a(n-1) + 10·a(n-2), for n odd a(n) = a(n-3) + 10 a(n-2); with a(1) = 0, a(2) = 1. A161999

Lexicographically earliest sequence of primes whose partial products lie between noncomposite numbers. A359948

Primes associated with A052507. A52480

Primes of the form 5·k² - 4. A201786