51694975 has 6 divisors (see below), whose sum is σ = 64101800. Its totient is φ = 41355960.

The previous prime is 51694939. The next prime is 51694997. The reversal of 51694975 is 57949615.

It is not a de Polignac number, because 51694975 - 2⁷ = 51694847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1033875 + ... + 1033924.

Almost surely, 2^51694975 is an apocalyptic number.

51694975 is a deficient number, since it is larger than the sum of its proper divisors (12406825).

51694975 is a wasteful number, since it uses less digits than its factorization.

51694975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067809 (or 2067804 counting only the distinct ones).

The product of its digits is 340200, while the sum is 46.

The square root of 51694975 is about 7189.9217659165. The cubic root of 51694975 is about 372.5198704173.

The spelling of 51694975 in words is "fifty-one million, six hundred ninety-four thousand, nine hundred seventy-five".