2057322521 has 2 divisors, whose sum is σ = 2057322522. Its totient is φ = 2057322520.

The previous prime is 2057322517. The next prime is 2057322523. The reversal of 2057322521 is 1252237502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252806025 + 804516496 = 35395^2 + 28364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057322521 - 2² = 2057322517 is a prime.

It is a Sophie Germain prime.

Together with 2057322523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2057322523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028661260 + 1028661261.

It is an arithmetic number, because the mean of its divisors is an integer number (1028661261).

Almost surely, 2^2057322521 is an apocalyptic number.

It is an amenable number.

2057322521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057322521 is an equidigital number, since it uses as much as digits as its factorization.

2057322521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2057322521 is about 45357.7173257209. The cubic root of 2057322521 is about 1271.8448235820.

The spelling of 2057322521 in words is "two billion, fifty-seven million, three hundred twenty-two thousand, five hundred twenty-one".