3243546521 has 2 divisors, whose sum is σ = 3243546522. Its totient is φ = 3243546520.

The previous prime is 3243546517. The next prime is 3243546539. The reversal of 3243546521 is 1256453423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2110483600 + 1133062921 = 45940^2 + 33661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243546521 - 2² = 3243546517 is a prime.

It is not a weakly prime, because it can be changed into another prime (3243546511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621773260 + 1621773261.

It is an arithmetic number, because the mean of its divisors is an integer number (1621773261).

Almost surely, 2^3243546521 is an apocalyptic number.

It is an amenable number.

3243546521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243546521 is an equidigital number, since it uses as much as digits as its factorization.

3243546521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 35.

The square root of 3243546521 is about 56952.1423741021. The cubic root of 3243546521 is about 1480.2669534588.

Adding to 3243546521 its reverse (1256453423), we get a palindrome (4499999944).

The spelling of 3243546521 in words is "three billion, two hundred forty-three million, five hundred forty-six thousand, five hundred twenty-one".