2155245276 has 12 divisors (see below), whose sum is σ = 5028905672. Its totient is φ = 718415088.

The previous prime is 2155245263. The next prime is 2155245299. The reversal of 2155245276 is 6725425512.

2155245276 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent 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, 89801875 + ... + 89801898.

Almost surely, 2^2155245276 is an apocalyptic number.

It is an amenable number.

2155245276 is an abundant number, since it is smaller than the sum of its proper divisors (2873660396).

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

2155245276 is a wasteful number, since it uses less digits than its factorization.

2155245276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179603780 (or 179603778 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 2155245276 is about 46424.6192876151. The cubic root of 2155245276 is about 1291.7116225454.

The spelling of 2155245276 in words is "two billion, one hundred fifty-five million, two hundred forty-five thousand, two hundred seventy-six".