55656558 has 20 divisors (see below), whose sum is σ = 124712280. Its totient is φ = 18552132.

The previous prime is 55656553. The next prime is 55656569. The reversal of 55656558 is 85565655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55656551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 171618 + ... + 171941.

It is an arithmetic number, because the mean of its divisors is an integer number (6235614).

Almost surely, 2^55656558 is an apocalyptic number.

55656558 is an abundant number, since it is smaller than the sum of its proper divisors (69055722).

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

55656558 is a wasteful number, since it uses less digits than its factorization.

55656558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343573 (or 343564 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The square root of 55656558 is about 7460.3322982291. The cubic root of 55656558 is about 381.8025120656.

The spelling of 55656558 in words is "fifty-five million, six hundred fifty-six thousand, five hundred fifty-eight".