3452531221 has 4 divisors (see below), whose sum is σ = 3459314700. Its totient is φ = 3445747744.

The previous prime is 3452531167. The next prime is 3452531237. The reversal of 3452531221 is 1221352543.

3452531221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2321890596 + 1130640625 = 48186^2 + 33625^2 .

It is a cyclic number.

It is not a de Polignac number, because 3452531221 - 2¹¹ = 3452529173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3452531221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3452531281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390976 + ... + 3391993.

It is an arithmetic number, because the mean of its divisors is an integer number (864828675).

Almost surely, 2^3452531221 is an apocalyptic number.

It is an amenable number.

3452531221 is a deficient number, since it is larger than the sum of its proper divisors (6783479).

3452531221 is an equidigital number, since it uses as much as digits as its factorization.

3452531221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783478.

The product of its digits is 7200, while the sum is 28.

The square root of 3452531221 is about 58758.2438556497. The cubic root of 3452531221 is about 1511.3992586380.

Adding to 3452531221 its reverse (1221352543), we get a palindrome (4673883764).

The spelling of 3452531221 in words is "three billion, four hundred fifty-two million, five hundred thirty-one thousand, two hundred twenty-one".