52128904 has 8 divisors (see below), whose sum is σ = 97741710. Its totient is φ = 26064448.

The previous prime is 52128899. The next prime is 52128929. The reversal of 52128904 is 40982125.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 260100 = 7202^2 + 510^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258049 + ... + 3258064.

Almost surely, 2^52128904 is an apocalyptic number.

It is an amenable number.

52128904 is a deficient number, since it is larger than the sum of its proper divisors (45612806).

52128904 is a wasteful number, since it uses less digits than its factorization.

52128904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516119 (or 6516115 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 52128904 is about 7220.0349029627. The cubic root of 52128904 is about 373.5592814501.

The spelling of 52128904 in words is "fifty-two million, one hundred twenty-eight thousand, nine hundred four".