55055568 has 40 divisors (see below), whose sum is σ = 142812288. Its totient is φ = 18276352.

The previous prime is 55055479. The next prime is 55055569. The reversal of 55055568 is 86555055.

It is a super-2 number, since 2×55055568² = 6062231135605248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055569) 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, 10105 + ... + 14567.

Almost surely, 2^55055568 is an apocalyptic number.

It is an amenable number.

55055568 is an abundant number, since it is smaller than the sum of its proper divisors (87756720).

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

55055568 is a wasteful number, since it uses less digits than its factorization.

55055568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731 (or 4725 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 39.

The square root of 55055568 is about 7419.9439350982. The cubic root of 55055568 is about 380.4232771876.

The spelling of 55055568 in words is "fifty-five million, fifty-five thousand, five hundred sixty-eight".