3245415521 has 4 divisors (see below), whose sum is σ = 3333129492. Its totient is φ = 3157701552.

The previous prime is 3245415499. The next prime is 3245415539. The reversal of 3245415521 is 1255145423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2988262225 + 257153296 = 54665^2 + 16036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3245415521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3245415571) 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 in 3 ways as a sum of consecutive naturals, for example, 43856930 + ... + 43857003.

It is an arithmetic number, because the mean of its divisors is an integer number (833282373).

Almost surely, 2^3245415521 is an apocalyptic number.

It is an amenable number.

3245415521 is a deficient number, since it is larger than the sum of its proper divisors (87713971).

3245415521 is an equidigital number, since it uses as much as digits as its factorization.

3245415521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87713970.

The product of its digits is 24000, while the sum is 32.

The square root of 3245415521 is about 56968.5485246026. The cubic root of 3245415521 is about 1480.5512192250.

The spelling of 3245415521 in words is "three billion, two hundred forty-five million, four hundred fifteen thousand, five hundred twenty-one".