55111568 has 20 divisors (see below), whose sum is σ = 107211888. Its totient is φ = 27444000.

The previous prime is 55111561. The next prime is 55111577. The reversal of 55111568 is 86511155.

55111568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55111561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2846 + ... + 10877.

Almost surely, 2^55111568 is an apocalyptic number.

It is an amenable number.

55111568 is a deficient number, since it is larger than the sum of its proper divisors (52100320).

55111568 is a wasteful number, since it uses less digits than its factorization.

55111568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13982 (or 13976 counting only the distinct ones).

The product of its digits is 6000, while the sum is 32.

The square root of 55111568 is about 7423.7165894180. The cubic root of 55111568 is about 380.5522165201.

The spelling of 55111568 in words is "fifty-five million, one hundred eleven thousand, five hundred sixty-eight".