2155552 has 24 divisors (see below), whose sum is σ = 4850496. Its totient is φ = 923712.

The previous prime is 2155519. The next prime is 2155579. The reversal of 2155552 is 2555512.

It is a happy number.

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, 4588 + ... + 5035.

It is an arithmetic number, because the mean of its divisors is an integer number (202104).

2^2155552 is an apocalyptic number.

It is an amenable number.

2155552 is an abundant number, since it is smaller than the sum of its proper divisors (2694944).

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

2155552 is an equidigital number, since it uses as much as digits as its factorization.

2155552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640 (or 9632 counting only the distinct ones).

The product of its digits is 2500, while the sum is 25.

The square root of 2155552 is about 1468.1798254982. The cubic root of 2155552 is about 129.1772896339.

The spelling of 2155552 in words is "two million, one hundred fifty-five thousand, five hundred fifty-two".