55628575 has 12 divisors (see below), whose sum is σ = 70844920. Its totient is φ = 43299360.

The previous prime is 55628569. The next prime is 55628579. The reversal of 55628575 is 57582655.

It is not a de Polignac number, because 55628575 - 2³ = 55628567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55628579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29145 + ... + 30994.

Almost surely, 2^55628575 is an apocalyptic number.

55628575 is a deficient number, since it is larger than the sum of its proper divisors (15216345).

55628575 is a wasteful number, since it uses less digits than its factorization.

55628575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60186 (or 60181 counting only the distinct ones).

The product of its digits is 420000, while the sum is 43.

The square root of 55628575 is about 7458.4566097819. The cubic root of 55628575 is about 381.7385137928.

The spelling of 55628575 in words is "fifty-five million, six hundred twenty-eight thousand, five hundred seventy-five".