55628604 has 18 divisors (see below), whose sum is σ = 140616840. Its totient is φ = 18542856.

The previous prime is 55628603. The next prime is 55628621. The reversal of 55628604 is 40682655.

55628604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1545239 = 55628604 / (5 + 5 + 6 + 2 + 8 + 6 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55628603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772584 + ... + 772655.

Almost surely, 2^55628604 is an apocalyptic number.

It is an amenable number.

55628604 is an abundant number, since it is smaller than the sum of its proper divisors (84988236).

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

55628604 is a wasteful number, since it uses less digits than its factorization.

55628604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545249 (or 1545244 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 55628604 is about 7458.4585538836. The cubic root of 55628604 is about 381.7385801281.

The spelling of 55628604 in words is "fifty-five million, six hundred twenty-eight thousand, six hundred four".