3221975 has 6 divisors (see below), whose sum is σ = 3995280. Its totient is φ = 2577560.

The previous prime is 3221971. The next prime is 3221983. The reversal of 3221975 is 5791223.

It is not a de Polignac number, because 3221975 - 2² = 3221971 is a prime.

It is a super-2 number, since 2×3221975² = 20762245801250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64415 + ... + 64464.

It is an arithmetic number, because the mean of its divisors is an integer number (665880).

Almost surely, 2^3221975 is an apocalyptic number.

3221975 is a deficient number, since it is larger than the sum of its proper divisors (773305).

3221975 is a wasteful number, since it uses less digits than its factorization.

3221975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128889 (or 128884 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 3221975 is about 1794.9860723694. The cubic root of 3221975 is about 147.6978098675.

The spelling of 3221975 in words is "three million, two hundred twenty-one thousand, nine hundred seventy-five".