51317168 has 20 divisors (see below), whose sum is σ = 113631120. Its totient is φ = 21993024.

The previous prime is 51317129. The next prime is 51317179. The reversal of 51317168 is 86171315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228983 + ... + 229206.

It is an arithmetic number, because the mean of its divisors is an integer number (5681556).

Almost surely, 2^51317168 is an apocalyptic number.

It is an amenable number.

51317168 is an abundant number, since it is smaller than the sum of its proper divisors (62313952).

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

51317168 is a wasteful number, since it uses less digits than its factorization.

51317168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458204 (or 458198 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 51317168 is about 7163.6002121838. The cubic root of 51317168 is about 371.6101438530.

The spelling of 51317168 in words is "fifty-one million, three hundred seventeen thousand, one hundred sixty-eight".