4613221 has 4 divisors (see below), whose sum is σ = 4618944. Its totient is φ = 4607500.

The previous prime is 4613209. The next prime is 4613237. The reversal of 4613221 is 1223164.

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 4613221 - 2⁹ = 4612709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4613251) 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, 1405 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (1154736).

Almost surely, 2^4613221 is an apocalyptic number.

It is an amenable number.

4613221 is a deficient number, since it is larger than the sum of its proper divisors (5723).

4613221 is an equidigital number, since it uses as much as digits as its factorization.

4613221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722.

The product of its digits is 288, while the sum is 19.

The square root of 4613221 is about 2147.8410090135. The cubic root of 4613221 is about 166.4695300259.

Adding to 4613221 its reverse (1223164), we get a palindrome (5836385).

The spelling of 4613221 in words is "four million, six hundred thirteen thousand, two hundred twenty-one".