55111236 has 24 divisors (see below), whose sum is σ = 129316320. Its totient is φ = 18267072.

The previous prime is 55111219. The next prime is 55111237. The reversal of 55111236 is 63211155.

It is not an unprimeable number, because it can be changed into a prime (55111237) 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, 10681 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (5388180).

Almost surely, 2^55111236 is an apocalyptic number.

It is an amenable number.

55111236 is an abundant number, since it is smaller than the sum of its proper divisors (74205084).

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

55111236 is a wasteful number, since it uses less digits than its factorization.

55111236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25843 (or 25841 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 55111236 is about 7423.6942286169. The cubic root of 55111236 is about 380.5514523515.

The spelling of 55111236 in words is "fifty-five million, one hundred eleven thousand, two hundred thirty-six".