55545688 has 32 divisors (see below), whose sum is σ = 114014160. Its totient is φ = 25159680.

The previous prime is 55545661. The next prime is 55545689. The reversal of 55545688 is 88654555.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28720 + ... + 30592.

Almost surely, 2^55545688 is an apocalyptic number.

It is an amenable number.

55545688 is an abundant number, since it is smaller than the sum of its proper divisors (58468472).

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

55545688 is a wasteful number, since it uses less digits than its factorization.

55545688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2223 counting only the distinct ones).

The product of its digits is 960000, while the sum is 46.

The square root of 55545688 is about 7452.8979598543. The cubic root of 55545688 is about 381.5488217840.

The spelling of 55545688 in words is "fifty-five million, five hundred forty-five thousand, six hundred eighty-eight".