55111232 has 28 divisors (see below), whose sum is σ = 119304816. Its totient is φ = 25050240.

The previous prime is 55111219. The next prime is 55111237. The reversal of 55111232 is 23211155.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55111237) 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 3 ways as a sum of consecutive naturals, for example, 38438 + ... + 39845.

Almost surely, 2^55111232 is an apocalyptic number.

It is an amenable number.

55111232 is an abundant number, since it is smaller than the sum of its proper divisors (64193584).

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

55111232 is a wasteful number, since it uses less digits than its factorization.

55111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78306 (or 78296 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 55111232 is about 7423.6939592093. The cubic root of 55111232 is about 380.5514431446.

Adding to 55111232 its reverse (23211155), we get a palindrome (78322387).

The spelling of 55111232 in words is "fifty-five million, one hundred eleven thousand, two hundred thirty-two".