51678875 has 16 divisors (see below), whose sum is σ = 64718784. Its totient is φ = 41200000.

The previous prime is 51678857. The next prime is 51678883. The reversal of 51678875 is 57887615.

It is a happy number.

51678875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51678875 - 2⁶ = 51678811 is a prime.

It is a super-2 number, since 2×51678875² = 5341412242531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49610 + ... + 50640.

It is an arithmetic number, because the mean of its divisors is an integer number (4044924).

Almost surely, 2^51678875 is an apocalyptic number.

51678875 is a deficient number, since it is larger than the sum of its proper divisors (13039909).

51678875 is a wasteful number, since it uses less digits than its factorization.

51678875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1437 counting only the distinct ones).

The product of its digits is 470400, while the sum is 47.

The square root of 51678875 is about 7188.8020559757. The cubic root of 51678875 is about 372.4811935913.

The spelling of 51678875 in words is "fifty-one million, six hundred seventy-eight thousand, eight hundred seventy-five".