3221445 has 8 divisors (see below), whose sum is σ = 5154336. Its totient is φ = 1718096.

The previous prime is 3221443. The next prime is 3221453. The reversal of 3221445 is 5441223.

3221445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221445 - 2¹ = 3221443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107367 + ... + 107396.

It is an arithmetic number, because the mean of its divisors is an integer number (644292).

Almost surely, 2^3221445 is an apocalyptic number.

It is an amenable number.

3221445 is a deficient number, since it is larger than the sum of its proper divisors (1932891).

3221445 is a wasteful number, since it uses less digits than its factorization.

3221445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214771.

The product of its digits is 960, while the sum is 21.

The square root of 3221445 is about 1794.8384328401. The cubic root of 3221445 is about 147.6897108877.

Adding to 3221445 its reverse (5441223), we get a palindrome (8662668).

The spelling of 3221445 in words is "three million, two hundred twenty-one thousand, four hundred forty-five".