3257343457 has 2 divisors, whose sum is σ = 3257343458. Its totient is φ = 3257343456.

The previous prime is 3257343443. The next prime is 3257343487. The reversal of 3257343457 is 7543437523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3176900496 + 80442961 = 56364^2 + 8969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3257343457 is a prime.

It is a super-2 number, since 2×3257343457² = 21220572793721421698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3257343487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628671728 + 1628671729.

It is an arithmetic number, because the mean of its divisors is an integer number (1628671729).

Almost surely, 2^3257343457 is an apocalyptic number.

It is an amenable number.

3257343457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3257343457 is an equidigital number, since it uses as much as digits as its factorization.

3257343457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 43.

The square root of 3257343457 is about 57073.1412925555. The cubic root of 3257343457 is about 1482.3628340874.

The spelling of 3257343457 in words is "three billion, two hundred fifty-seven million, three hundred forty-three thousand, four hundred fifty-seven".