2057137321 has 16 divisors (see below), whose sum is σ = 2153773440. Its totient is φ = 1963198080.

The previous prime is 2057137279. The next prime is 2057137349. The reversal of 2057137321 is 1237317502.

It is not a de Polignac number, because 2057137321 - 2⁷ = 2057137193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057137421) 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, 347575 + ... + 353443.

It is an arithmetic number, because the mean of its divisors is an integer number (134610840).

Almost surely, 2^2057137321 is an apocalyptic number.

It is an amenable number.

2057137321 is a deficient number, since it is larger than the sum of its proper divisors (96636119).

2057137321 is a wasteful number, since it uses less digits than its factorization.

2057137321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 2057137321 is about 45355.6757308278. The cubic root of 2057137321 is about 1271.8066586488.

The spelling of 2057137321 in words is "two billion, fifty-seven million, one hundred thirty-seven thousand, three hundred twenty-one".