2556804772 has 12 divisors (see below), whose sum is σ = 4583540556. Its totient is φ = 1247221760.

The previous prime is 2556804721. The next prime is 2556804839. The reversal of 2556804772 is 2774086552.

2556804772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1045616896 + 1511187876 = 32336^2 + 38874^2 .

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, 7794973 + ... + 7795300.

It is an arithmetic number, because the mean of its divisors is an integer number (381961713).

Almost surely, 2^2556804772 is an apocalyptic number.

It is an amenable number.

2556804772 is a deficient number, since it is larger than the sum of its proper divisors (2026735784).

2556804772 is a wasteful number, since it uses less digits than its factorization.

2556804772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15590318 (or 15590316 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 46.

The square root of 2556804772 is about 50564.8570847382. The cubic root of 2556804772 is about 1367.4113784065.

The spelling of 2556804772 in words is "two billion, five hundred fifty-six million, eight hundred four thousand, seven hundred seventy-two".