55028404 has 12 divisors (see below), whose sum is σ = 96789924. Its totient is φ = 27374144.

The previous prime is 55028387. The next prime is 55028411. The reversal of 55028404 is 40482055.

It can be written as a sum of positive squares in 2 ways, for example, as 30228004 + 24800400 = 5498^2 + 4980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34129 + ... + 35704.

It is an arithmetic number, because the mean of its divisors is an integer number (8065827).

Almost surely, 2^55028404 is an apocalyptic number.

It is an amenable number.

55028404 is a deficient number, since it is larger than the sum of its proper divisors (41761520).

55028404 is a wasteful number, since it uses less digits than its factorization.

55028404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70034 (or 70032 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 55028404 is about 7418.1132372053. The cubic root of 55028404 is about 380.3607009077.

The spelling of 55028404 in words is "fifty-five million, twenty-eight thousand, four hundred four".