55558575 has 48 divisors (see below), whose sum is σ = 104055840. Its totient is φ = 29053440.

The previous prime is 55558561. The next prime is 55558579. The reversal of 55558575 is 57585555.

It is a happy number.

It is not a de Polignac number, because 55558575 - 2⁵ = 55558543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55558575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558579) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34999 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2^55558575 is an apocalyptic number.

55558575 is a deficient number, since it is larger than the sum of its proper divisors (48497265).

55558575 is a wasteful number, since it uses less digits than its factorization.

55558575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1614 counting only the distinct ones).

The product of its digits is 875000, while the sum is 45.

The square root of 55558575 is about 7453.7624727382. The cubic root of 55558575 is about 381.5783268613.

The spelling of 55558575 in words is "fifty-five million, five hundred fifty-eight thousand, five hundred seventy-five".