3220545 has 16 divisors (see below), whose sum is σ = 5251392. Its totient is φ = 1684800.

The previous prime is 3220543. The next prime is 3220549. The reversal of 3220545 is 5450223.

It is not a de Polignac number, because 3220545 - 2¹ = 3220543 is a prime.

3220545 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3220543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231 + ... + 2820.

It is an arithmetic number, because the mean of its divisors is an integer number (328212).

Almost surely, 2^3220545 is an apocalyptic number.

It is an amenable number.

3220545 is a deficient number, since it is larger than the sum of its proper divisors (2030847).

3220545 is a wasteful number, since it uses less digits than its factorization.

3220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 3220545 is about 1794.5876963804. The cubic root of 3220545 is about 147.6759558678.

Adding to 3220545 its reverse (5450223), we get a palindrome (8670768).

The spelling of 3220545 in words is "three million, two hundred twenty thousand, five hundred forty-five".