51695375 has 16 divisors (see below), whose sum is σ = 67324608. Its totient is φ = 39556000.

The previous prime is 51695359. The next prime is 51695389. The reversal of 51695375 is 57359615.

It is not a de Polignac number, because 51695375 - 2⁴ = 51695359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6116 + ... + 11865.

It is an arithmetic number, because the mean of its divisors is an integer number (4207788).

Almost surely, 2^51695375 is an apocalyptic number.

51695375 is a deficient number, since it is larger than the sum of its proper divisors (15629233).

51695375 is a wasteful number, since it uses less digits than its factorization.

51695375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18019 (or 18009 counting only the distinct ones).

The product of its digits is 141750, while the sum is 41.

The square root of 51695375 is about 7189.9495825771. The cubic root of 51695375 is about 372.5208312300.

The spelling of 51695375 in words is "fifty-one million, six hundred ninety-five thousand, three hundred seventy-five".