1322057257 has 2 divisors, whose sum is σ = 1322057258. Its totient is φ = 1322057256.

The previous prime is 1322057251. The next prime is 1322057263. The reversal of 1322057257 is 7527502231.

It is a balanced prime because it is at equal distance from previous prime (1322057251) and next prime (1322057263).

It can be written as a sum of positive squares in only one way, i.e., 998812816 + 323244441 = 31604^2 + 17979^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322057257 - 2⁷ = 1322057129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1322057251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661028628 + 661028629.

It is an arithmetic number, because the mean of its divisors is an integer number (661028629).

Almost surely, 2^1322057257 is an apocalyptic number.

It is an amenable number.

1322057257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322057257 is an equidigital number, since it uses as much as digits as its factorization.

1322057257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 1322057257 is about 36360.1052941270. The cubic root of 1322057257 is about 1097.5308963339.

Adding to 1322057257 its reverse (7527502231), we get a palindrome (8849559488).

The spelling of 1322057257 in words is "one billion, three hundred twenty-two million, fifty-seven thousand, two hundred fifty-seven".