51912128 has 14 divisors (see below), whose sum is σ = 103013256. Its totient is φ = 25956032.

The previous prime is 51912097. The next prime is 51912143. The reversal of 51912128 is 82121915.

It is a self number, because there is not a number n which added to its sum of digits gives 51912128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405500 + ... + 405627.

Almost surely, 2^51912128 is an apocalyptic number.

It is an amenable number.

51912128 is a deficient number, since it is larger than the sum of its proper divisors (51101128).

51912128 is an equidigital number, since it uses as much as digits as its factorization.

51912128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811139 (or 811129 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 51912128 is about 7205.0071478105. The cubic root of 51912128 is about 373.0407514887.

The spelling of 51912128 in words is "fifty-one million, nine hundred twelve thousand, one hundred twenty-eight".