3257568481 has 2 divisors, whose sum is σ = 3257568482. Its totient is φ = 3257568480.

The previous prime is 3257568439. The next prime is 3257568491. The reversal of 3257568481 is 1848657523.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3137008081 + 120560400 = 56009^2 + 10980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3257568481 is a prime.

It is a super-2 number, since 2×3257568481² = 21223504816809294722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3257568491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628784240 + 1628784241.

It is an arithmetic number, because the mean of its divisors is an integer number (1628784241).

Almost surely, 2^3257568481 is an apocalyptic number.

It is an amenable number.

3257568481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3257568481 is an equidigital number, since it uses as much as digits as its factorization.

3257568481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 49.

The square root of 3257568481 is about 57075.1126236296. The cubic root of 3257568481 is about 1482.3969681948.

The spelling of 3257568481 in words is "three billion, two hundred fifty-seven million, five hundred sixty-eight thousand, four hundred eighty-one".