51465968 has 40 divisors (see below), whose sum is σ = 102569328. Its totient is φ = 25006592.

The previous prime is 51465961. The next prime is 51465979. The reversal of 51465968 is 86956415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115955 + ... + 116397.

Almost surely, 2^51465968 is an apocalyptic number.

It is an amenable number.

51465968 is a deficient number, since it is larger than the sum of its proper divisors (51103360).

51465968 is a wasteful number, since it uses less digits than its factorization.

51465968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 635 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 51465968 is about 7173.9785335614. The cubic root of 51465968 is about 371.9689726309.

The spelling of 51465968 in words is "fifty-one million, four hundred sixty-five thousand, nine hundred sixty-eight".