55042180 has 12 divisors (see below), whose sum is σ = 115588620. Its totient is φ = 22016864.

The previous prime is 55042177. The next prime is 55042241. The reversal of 55042180 is 8124055.

It can be written as a sum of positive squares in 2 ways, for example, as 25644096 + 29398084 = 5064^2 + 5422^2 .

It is an unprimeable number.

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, 1376035 + ... + 1376074.

It is an arithmetic number, because the mean of its divisors is an integer number (9632385).

Almost surely, 2^55042180 is an apocalyptic number.

It is an amenable number.

55042180 is an abundant number, since it is smaller than the sum of its proper divisors (60546440).

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

55042180 is a wasteful number, since it uses less digits than its factorization.

55042180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752118 (or 2752116 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 55042180 is about 7419.0417170953. The cubic root of 55042180 is about 380.3924385283.

The spelling of 55042180 in words is "fifty-five million, forty-two thousand, one hundred eighty".