51903168 has 28 divisors (see below), whose sum is σ = 137327640. Its totient is φ = 17300992.

The previous prime is 51903161. The next prime is 51903169. The reversal of 51903168 is 86130915.

It is not an unprimeable number, because it can be changed into a prime (51903161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134973 + ... + 135356.

Almost surely, 2^51903168 is an apocalyptic number.

It is an amenable number.

51903168 is an abundant number, since it is smaller than the sum of its proper divisors (85424472).

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

51903168 is a wasteful number, since it uses less digits than its factorization.

51903168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270344 (or 270334 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 51903168 is about 7204.3853311716. The cubic root of 51903168 is about 373.0192880557.

The spelling of 51903168 in words is "fifty-one million, nine hundred three thousand, one hundred sixty-eight".