51071968 has 24 divisors (see below), whose sum is σ = 101929968. Its totient is φ = 25185024.

The previous prime is 51071941. The next prime is 51072017. The reversal of 51071968 is 86917015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8596 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (4247082).

Almost surely, 2^51071968 is an apocalyptic number.

It is an amenable number.

51071968 is a deficient number, since it is larger than the sum of its proper divisors (50858000).

51071968 is a wasteful number, since it uses less digits than its factorization.

51071968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946 (or 21938 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 51071968 is about 7146.4654200521. The cubic root of 51071968 is about 371.0173317196.

The spelling of 51071968 in words is "fifty-one million, seventy-one thousand, nine hundred sixty-eight".