2257739321 has 2 divisors, whose sum is σ = 2257739322. Its totient is φ = 2257739320.

The previous prime is 2257739303. The next prime is 2257739369. The reversal of 2257739321 is 1239377522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1878268921 + 379470400 = 43339^2 + 19480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257739321 - 2⁶ = 2257739257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2257739521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128869660 + 1128869661.

It is an arithmetic number, because the mean of its divisors is an integer number (1128869661).

Almost surely, 2^2257739321 is an apocalyptic number.

It is an amenable number.

2257739321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257739321 is an equidigital number, since it uses as much as digits as its factorization.

2257739321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 41.

The square root of 2257739321 is about 47515.6744769555. The cubic root of 2257739321 is about 1311.8714043432.

The spelling of 2257739321 in words is "two billion, two hundred fifty-seven million, seven hundred thirty-nine thousand, three hundred twenty-one".