Properties of the Number 49891

Forty-Nine Thousand Eight Hundred Ninety-One

Basics

Value: 49890 → 49891 → 49892

Parity: odd

Prime: Yes

Previous Prime: 49877

Next Prime: 49919

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 49891

Divisors: 1, 49891

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100001011100011

Octal: 141343

Duodecimal: 24A57

Hexadecimal: c2e3

Square: 2489111881

Square Root: 223.36293336182706

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 p such that reversal(p) - 13 is a square. A176371

Largest prime < 100·a(n-1), a(1) = 5. A124358

Numbers k such that k and k² use only the digits 1, 2, 4, 8 and 9. A137000

Primes that start a run of at least seven consecutive primes, where between successive primes exactly one digit changes and the resulting digits may be permuted. A157717

Digit sums of A092571. A165724

Partial sums of the Floor-Sqrt transform of central binomial coefficients. A192656

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = a(2) = 1 and a(3) = 2. A49891

Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 7 or 8 king-move adjacent elements, with upper left element zero. A305585