2155044 has 24 divisors (see below), whose sum is σ = 5136768. Its totient is φ = 702880.

The previous prime is 2155009. The next prime is 2155057. The reversal of 2155044 is 4405512.

2155044 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2155044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347 + ... + 2474.

It is an arithmetic number, because the mean of its divisors is an integer number (214032).

2^2155044 is an apocalyptic number.

It is an amenable number.

2155044 is an abundant number, since it is smaller than the sum of its proper divisors (2981724).

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

2155044 is a wasteful number, since it uses less digits than its factorization.

2155044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2155044 is about 1468.0068119733. The cubic root of 2155044 is about 129.1671410782.

The spelling of 2155044 in words is "two million, one hundred fifty-five thousand, forty-four".