Properties of the Number 5251

Five Thousand Two Hundred Fifty-One

Basics

Value: 5250 → 5251 → 5252

Parity: odd

Prime: No

Previous Prime: 5237

Next Prime: 5261

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 59 × 89

Divisors: 1, 59, 89, 5251

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010000011

Octal: 12203

Duodecimal: 3057

Hexadecimal: 1483

Square: 27573001

Square Root: 72.46378405796926

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

Second spoke of a hexagonal spiral. A56106

Second pentagonal numbers with odd index: a(n) = (2·n-1)*(3·n-1). A33568

Numbers m > 1 such that a record number of numbers k have m as the sum of the proper divisors of k. A238895

Semiprimes in A056106. A113524

Expansion of e.g.f. exp(x) / (1 - x³). A330044

Triangle, read by rows, where T(n,k) equals the dot product of the vector of terms in row n that are to the right of T(n,k) with the vector of terms in column k that are above T(n,k): T(n,k) = ∑_j=0..n-k-1 T(n,j+k+1)*T(j+k,k) for n > k+1 > 0, with T(n,n) = 1 and T(n,n-1) = n (n>=1). A115080

a(n) = 25·n*(n + 1)/2 + 1. A262221

Expansion of (1/x) * Series_Reversion( x * (1-x-x³)² ). A368962

Expansion of g.f. (1-2·x+51·x²)/(1-x)³. A257352

Index where prime(n) appears as a term in A379248. A379290