2557315321 has 16 divisors (see below), whose sum is σ = 2976481728. Its totient is φ = 2171353600.

The previous prime is 2557315303. The next prime is 2557315331. The reversal of 2557315321 is 1235137552.

2557315321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2557315321 - 2⁵ = 2557315289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2557315331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27700 + ... + 76693.

It is an arithmetic number, because the mean of its divisors is an integer number (186030108).

Almost surely, 2^2557315321 is an apocalyptic number.

It is an amenable number.

2557315321 is a deficient number, since it is larger than the sum of its proper divisors (419166407).

2557315321 is a wasteful number, since it uses less digits than its factorization.

2557315321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104552.

The product of its digits is 31500, while the sum is 34.

The square root of 2557315321 is about 50569.9052896088. The cubic root of 2557315321 is about 1367.5023883598.

The spelling of 2557315321 in words is "two billion, five hundred fifty-seven million, three hundred fifteen thousand, three hundred twenty-one".