Properties of the Number 51870

Fifty-One Thousand Eight Hundred Seventy

Basics

Value: 51869 → 51870 → 51871

Parity: even

Prime: No

Previous Prime: 51869

Next Prime: 51871

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 13 × 19

Divisors: 1, 2, 3, 5, 6, 7, 10, 13, 14, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101010011110

Octal: 145236

Duodecimal: 26026

Hexadecimal: ca9e

Square: 2690496900

Square Root: 227.74986278810357

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

Products of exactly 6 distinct primes. A67885

Least number k such that all coefficients of k·B(n,x), the n-th Bernoulli polynomial, are integers. A144845

Product of all primes p not dividing n such that the sum of the base-p digits of n is at least p, or 1 if no such prime exists. A324370

a(n) = denominator(Bernoulli_n+1(x) - Bernoulli_n+1). A195441

Numbers with six distinct prime divisors. A74969

L-matrix for Euler numbers A000111(n+1). A147315

Denominator of (2n+1) B_2n, where B_n are the Bernoulli numbers. A6955

Triangle read by rows in which row n contains first n numbers with exactly n distinct prime factors. A48692

Denominator of (n+1)*Bernoulli(n). A50932

Smallest number beginning with 5 and having exactly n distinct prime divisors. A77330