2204621 has 4 divisors (see below), whose sum is σ = 2235744. Its totient is φ = 2173500.

The previous prime is 2204603. The next prime is 2204623. The reversal of 2204621 is 1264022.

2204621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2204621 - 2⁶ = 2204557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2204621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15455 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (558936).

2^2204621 is an apocalyptic number.

It is an amenable number.

2204621 is a deficient number, since it is larger than the sum of its proper divisors (31123).

2204621 is an equidigital number, since it uses as much as digits as its factorization.

2204621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31122.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2204621 is about 1484.7966190694. The cubic root of 2204621 is about 130.1501421101.

Adding to 2204621 its reverse (1264022), we get a palindrome (3468643).

The spelling of 2204621 in words is "two million, two hundred four thousand, six hundred twenty-one".