2155612 has 12 divisors (see below), whose sum is σ = 3800440. Its totient is φ = 1069776.

The previous prime is 2155609. The next prime is 2155613. The reversal of 2155612 is 2165512.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383 + ... + 2494.

2^2155612 is an apocalyptic number.

It is an amenable number.

2155612 is a deficient number, since it is larger than the sum of its proper divisors (1644828).

2155612 is a wasteful number, since it uses less digits than its factorization.

2155612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020 (or 4018 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 2155612 is about 1468.2002588203. The cubic root of 2155612 is about 129.1784881769.

The spelling of 2155612 in words is "two million, one hundred fifty-five thousand, six hundred twelve".