55044018 has 12 divisors (see below), whose sum is σ = 119262078. Its totient is φ = 18348000.

The previous prime is 55043993. The next prime is 55044029. The reversal of 55044018 is 81044055.

It can be written as a sum of positive squares in only one way, i.e., 53538489 + 1505529 = 7317^2 + 1227^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55043982 and 55044000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1528983 + ... + 1529018.

Almost surely, 2^55044018 is an apocalyptic number.

55044018 is an abundant number, since it is smaller than the sum of its proper divisors (64218060).

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

55044018 is a wasteful number, since it uses less digits than its factorization.

55044018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058009 (or 3058006 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 55044018 is about 7419.1655865063. The cubic root of 55044018 is about 380.3966725752.

The spelling of 55044018 in words is "fifty-five million, forty-four thousand, eighteen".