2155644524 has 36 divisors (see below), whose sum is σ = 4242969192. Its totient is φ = 957042240.

The previous prime is 2155644511. The next prime is 2155644539. The reversal of 2155644524 is 4254465512.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30977 + ... + 72600.

Almost surely, 2^2155644524 is an apocalyptic number.

It is an amenable number.

2155644524 is a deficient number, since it is larger than the sum of its proper divisors (2087324668).

2155644524 is a wasteful number, since it uses less digits than its factorization.

2155644524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103646 (or 103633 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

The square root of 2155644524 is about 46428.9190483690. The cubic root of 2155644524 is about 1291.7913785785.

The spelling of 2155644524 in words is "two billion, one hundred fifty-five million, six hundred forty-four thousand, five hundred twenty-four".