2557087136 has 12 divisors (see below), whose sum is σ = 5034265362. Its totient is φ = 1278543552.

The previous prime is 2557087067. The next prime is 2557087153. The reversal of 2557087136 is 6317807552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1909690000 + 647397136 = 43700^2 + 25444^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39954455 + ... + 39954518.

Almost surely, 2^2557087136 is an apocalyptic number.

It is an amenable number.

2557087136 is a deficient number, since it is larger than the sum of its proper divisors (2477178226).

2557087136 is an equidigital number, since it uses as much as digits as its factorization.

2557087136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79908983 (or 79908975 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 2557087136 is about 50567.6491049366. The cubic root of 2557087136 is about 1367.4617138275.

The spelling of 2557087136 in words is "two billion, five hundred fifty-seven million, eighty-seven thousand, one hundred thirty-six".