3221265 has 16 divisors (see below), whose sum is σ = 5378688. Its totient is φ = 1643136.

The previous prime is 3221261. The next prime is 3221269. The reversal of 3221265 is 5621223.

It is an interprime number because it is at equal distance from previous prime (3221261) and next prime (3221269).

It is not a de Polignac number, because 3221265 - 2² = 3221261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3221261) 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, 4324 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (336168).

Almost surely, 2^3221265 is an apocalyptic number.

It is an amenable number.

3221265 is a deficient number, since it is larger than the sum of its proper divisors (2157423).

3221265 is a wasteful number, since it uses less digits than its factorization.

3221265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368.

The product of its digits is 720, while the sum is 21.

The square root of 3221265 is about 1794.7882883505. The cubic root of 3221265 is about 147.6869600887.

Adding to 3221265 its reverse (5621223), we get a palindrome (8842488).

It can be divided in two parts, 3221 and 265, that added together give a triangular number (3486 = T₈₃).

The spelling of 3221265 in words is "three million, two hundred twenty-one thousand, two hundred sixty-five".