2155176804 has 48 divisors (see below), whose sum is σ = 5492551680. Its totient is φ = 652292640.

The previous prime is 2155176799. The next prime is 2155176827. The reversal of 2155176804 is 4086715512.

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 15 ways as a sum of consecutive naturals, for example, 104457 + ... + 123375.

It is an arithmetic number, because the mean of its divisors is an integer number (114428160).

Almost surely, 2^2155176804 is an apocalyptic number.

It is an amenable number.

2155176804 is an abundant number, since it is smaller than the sum of its proper divisors (3337374876).

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

2155176804 is a wasteful number, since it uses less digits than its factorization.

2155176804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800 (or 19798 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 2155176804 is about 46423.8818282142. The cubic root of 2155176804 is about 1291.6979432029.

The spelling of 2155176804 in words is "two billion, one hundred fifty-five million, one hundred seventy-six thousand, eight hundred four".