2057305321 has 2 divisors, whose sum is σ = 2057305322. Its totient is φ = 2057305320.

The previous prime is 2057305277. The next prime is 2057305333. The reversal of 2057305321 is 1235037502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2050731225 + 6574096 = 45285^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057305321 - 2²⁵ = 2023750889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2057305321.

It is not a weakly prime, because it can be changed into another prime (2057305361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028652660 + 1028652661.

It is an arithmetic number, because the mean of its divisors is an integer number (1028652661).

Almost surely, 2^2057305321 is an apocalyptic number.

It is an amenable number.

2057305321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057305321 is an equidigital number, since it uses as much as digits as its factorization.

2057305321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 2057305321 is about 45357.5277214268. The cubic root of 2057305321 is about 1271.8412792031.

The spelling of 2057305321 in words is "two billion, fifty-seven million, three hundred five thousand, three hundred twenty-one".