3258221 has 4 divisors (see below), whose sum is σ = 3279132. Its totient is φ = 3237312.

The previous prime is 3258217. The next prime is 3258223. The reversal of 3258221 is 1228523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1228523 = 269 ⋅4567.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 2280100 = 989^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 3258221 - 2² = 3258217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3258223) 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, 10220 + ... + 10533.

It is an arithmetic number, because the mean of its divisors is an integer number (819783).

Almost surely, 2^3258221 is an apocalyptic number.

It is an amenable number.

3258221 is a deficient number, since it is larger than the sum of its proper divisors (20911).

3258221 is a wasteful number, since it uses less digits than its factorization.

3258221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20910.

The product of its digits is 960, while the sum is 23.

The square root of 3258221 is about 1805.0542928123. The cubic root of 3258221 is about 148.2495940543.

The spelling of 3258221 in words is "three million, two hundred fifty-eight thousand, two hundred twenty-one".