55231180 has 12 divisors (see below), whose sum is σ = 115985520. Its totient is φ = 22092464.

The previous prime is 55231151. The next prime is 55231193. The reversal of 55231180 is 8113255.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380760 + ... + 1380799.

It is an arithmetic number, because the mean of its divisors is an integer number (9665460).

Almost surely, 2^55231180 is an apocalyptic number.

It is an amenable number.

55231180 is an abundant number, since it is smaller than the sum of its proper divisors (60754340).

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

55231180 is a wasteful number, since it uses less digits than its factorization.

55231180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761568 (or 2761566 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 55231180 is about 7431.7682956346. The cubic root of 55231180 is about 380.8273294858.

The spelling of 55231180 in words is "fifty-five million, two hundred thirty-one thousand, one hundred eighty".