3243446521 has 16 divisors (see below), whose sum is σ = 3749213440. Its totient is φ = 2748349440.

The previous prime is 3243446467. The next prime is 3243446551. The reversal of 3243446521 is 1256443423.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243446521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3243446551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764476 + ... + 768706.

It is an arithmetic number, because the mean of its divisors is an integer number (234325840).

Almost surely, 2^3243446521 is an apocalyptic number.

It is an amenable number.

3243446521 is a deficient number, since it is larger than the sum of its proper divisors (505766919).

3243446521 is a wasteful number, since it uses less digits than its factorization.

3243446521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464.

The product of its digits is 69120, while the sum is 34.

The square root of 3243446521 is about 56951.2644372362. The cubic root of 3243446521 is about 1480.2517408701.

Adding to 3243446521 its reverse (1256443423), we get a palindrome (4499889944).

The spelling of 3243446521 in words is "three billion, two hundred forty-three million, four hundred forty-six thousand, five hundred twenty-one".