51130887 has 8 divisors (see below), whose sum is σ = 68208000. Its totient is φ = 34070520.

The previous prime is 51130867. The next prime is 51130889. The reversal of 51130887 is 78803115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51130887 - 2⁸ = 51130631 is a prime.

It is a super-2 number, since 2×51130887² = 5228735210813538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51130889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8062 + ... + 12932.

It is an arithmetic number, because the mean of its divisors is an integer number (8526000).

Almost surely, 2^51130887 is an apocalyptic number.

51130887 is a deficient number, since it is larger than the sum of its proper divisors (17077113).

51130887 is a wasteful number, since it uses less digits than its factorization.

51130887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 51130887 is about 7150.5864794435. The cubic root of 51130887 is about 371.1599511785.

The spelling of 51130887 in words is "fifty-one million, one hundred thirty thousand, eight hundred eighty-seven".