3220571 has 4 divisors (see below), whose sum is σ = 3295512. Its totient is φ = 3145632.

The previous prime is 3220561. The next prime is 3220577. The reversal of 3220571 is 1750223.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3220571 - 2¹⁸ = 2958427 is a prime.

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, 37406 + ... + 37491.

It is an arithmetic number, because the mean of its divisors is an integer number (823878).

Almost surely, 2^3220571 is an apocalyptic number.

3220571 is a deficient number, since it is larger than the sum of its proper divisors (74941).

3220571 is an equidigital number, since it uses as much as digits as its factorization.

3220571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74940.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 3220571 is about 1794.5949403696. The cubic root of 3220571 is about 147.6763532710.

Adding to 3220571 its reverse (1750223), we get a palindrome (4970794).

The spelling of 3220571 in words is "three million, two hundred twenty thousand, five hundred seventy-one".