2557321692 has 24 divisors (see below), whose sum is σ = 6048826896. Its totient is φ = 840763008.

The previous prime is 2557321687. The next prime is 2557321733. The reversal of 2557321692 is 2961237552.

2557321692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458783 + ... + 1460534.

It is an arithmetic number, because the mean of its divisors is an integer number (252034454).

Almost surely, 2^2557321692 is an apocalyptic number.

It is an amenable number.

2557321692 is an abundant number, since it is smaller than the sum of its proper divisors (3491505204).

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

2557321692 is a wasteful number, since it uses less digits than its factorization.

2557321692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919397 (or 2919395 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 2557321692 is about 50569.9682815799. The cubic root of 2557321692 is about 1367.5035239714.

The spelling of 2557321692 in words is "two billion, five hundred fifty-seven million, three hundred twenty-one thousand, six hundred ninety-two".