51695968 has 12 divisors (see below), whose sum is σ = 101776500. Its totient is φ = 25847968.

The previous prime is 51695887. The next prime is 51695971. The reversal of 51695968 is 86959615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807718 + ... + 807781.

It is an arithmetic number, because the mean of its divisors is an integer number (8481375).

Almost surely, 2^51695968 is an apocalyptic number.

It is an amenable number.

51695968 is a deficient number, since it is larger than the sum of its proper divisors (50080532).

51695968 is a wasteful number, since it uses less digits than its factorization.

51695968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615509 (or 1615501 counting only the distinct ones).

The product of its digits is 583200, while the sum is 49.

The square root of 51695968 is about 7189.9908205783. The cubic root of 51695968 is about 372.5222556257.

The spelling of 51695968 in words is "fifty-one million, six hundred ninety-five thousand, nine hundred sixty-eight".