2155012 has 12 divisors (see below), whose sum is σ = 3817296. Its totient is φ = 1064360.

The previous prime is 2155009. The next prime is 2155057. The reversal of 2155012 is 2105512.

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, 2914 + ... + 3577.

It is an arithmetic number, because the mean of its divisors is an integer number (318108).

2^2155012 is an apocalyptic number.

It is an amenable number.

2155012 is a deficient number, since it is larger than the sum of its proper divisors (1662284).

2155012 is a wasteful number, since it uses less digits than its factorization.

2155012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578 (or 6576 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2155012 is about 1467.9959128008. The cubic root of 2155012 is about 129.1665017457.

The spelling of 2155012 in words is "two million, one hundred fifty-five thousand, twelve".