55628583 has 16 divisors (see below), whose sum is σ = 77149920. Its totient is φ = 35610624.

The previous prime is 55628579. The next prime is 55628591. The reversal of 55628583 is 38582655.

55628583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55628583 - 2² = 55628579 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55628543) 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 15 ways as a sum of consecutive naturals, for example, 15135 + ... + 18447.

It is an arithmetic number, because the mean of its divisors is an integer number (4821870).

Almost surely, 2^55628583 is an apocalyptic number.

55628583 is a deficient number, since it is larger than the sum of its proper divisors (21521337).

55628583 is a wasteful number, since it uses less digits than its factorization.

55628583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538.

The product of its digits is 288000, while the sum is 42.

The square root of 55628583 is about 7458.4571460859. The cubic root of 55628583 is about 381.7385320922.

The spelling of 55628583 in words is "fifty-five million, six hundred twenty-eight thousand, five hundred eighty-three".