51901968 has 20 divisors (see below), whose sum is σ = 134080208. Its totient is φ = 17300640.

The previous prime is 51901963. The next prime is 51901987. The reversal of 51901968 is 86910915.

51901968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51901963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540598 + ... + 540693.

Almost surely, 2^51901968 is an apocalyptic number.

It is an amenable number.

51901968 is an abundant number, since it is smaller than the sum of its proper divisors (82178240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51901968 is a wasteful number, since it uses less digits than its factorization.

51901968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081302 (or 1081296 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 51901968 is about 7204.3020480821. The cubic root of 51901968 is about 373.0164133012.

The spelling of 51901968 in words is "fifty-one million, nine hundred one thousand, nine hundred sixty-eight".