3220537 has 4 divisors (see below), whose sum is σ = 3331620. Its totient is φ = 3109456.

The previous prime is 3220523. The next prime is 3220543. The reversal of 3220537 is 7350223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7350223 = 1303 ⋅5641.

It can be written as a sum of positive squares in 2 ways, for example, as 2105401 + 1115136 = 1451^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220537 - 2⁷ = 3220409 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220577) 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, 55498 + ... + 55555.

It is an arithmetic number, because the mean of its divisors is an integer number (832905).

Almost surely, 2^3220537 is an apocalyptic number.

It is an amenable number.

3220537 is a deficient number, since it is larger than the sum of its proper divisors (111083).

3220537 is a wasteful number, since it uses less digits than its factorization.

3220537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111082.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 3220537 is about 1794.5854674548. The cubic root of 3220537 is about 147.6758335895.

The spelling of 3220537 in words is "three million, two hundred twenty thousand, five hundred thirty-seven".