55232772 has 48 divisors (see below), whose sum is σ = 155043840. Its totient is φ = 14949792.

The previous prime is 55232761. The next prime is 55232809. The reversal of 55232772 is 27723255.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15708 + ... + 18899.

It is an arithmetic number, because the mean of its divisors is an integer number (3230080).

Almost surely, 2^55232772 is an apocalyptic number.

It is an amenable number.

55232772 is an abundant number, since it is smaller than the sum of its proper divisors (99811068).

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

55232772 is a wasteful number, since it uses less digits than its factorization.

55232772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34640 (or 34638 counting only the distinct ones).

The product of its digits is 29400, while the sum is 33.

The square root of 55232772 is about 7431.8754026154. The cubic root of 55232772 is about 380.8309884775.

The spelling of 55232772 in words is "fifty-five million, two hundred thirty-two thousand, seven hundred seventy-two".