2155856152 has 16 divisors (see below), whose sum is σ = 4062546000. Its totient is φ = 1072510560.

The previous prime is 2155856111. The next prime is 2155856177. The reversal of 2155856152 is 2516585512.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 675499 + ... + 678682.

It is an arithmetic number, because the mean of its divisors is an integer number (253909125).

Almost surely, 2^2155856152 is an apocalyptic number.

It is an amenable number.

2155856152 is a deficient number, since it is larger than the sum of its proper divisors (1906689848).

2155856152 is a wasteful number, since it uses less digits than its factorization.

2155856152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354386 (or 1354382 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The square root of 2155856152 is about 46431.1980461413. The cubic root of 2155856152 is about 1291.8336505884.

The spelling of 2155856152 in words is "two billion, one hundred fifty-five million, eight hundred fifty-six thousand, one hundred fifty-two".