4563221 has 8 divisors (see below), whose sum is σ = 4945080. Its totient is φ = 4185792.

The previous prime is 4563217. The next prime is 4563239. The reversal of 4563221 is 1223654.

4563221 = 1510² + 1511².

It can be written as a sum of positive squares in 4 ways, for example, as 2283121 + 2280100 = 1511^2 + 1510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4563221 - 2² = 4563217 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 (4563271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235 + ... + 3263.

It is an arithmetic number, because the mean of its divisors is an integer number (618135).

Almost surely, 2^4563221 is an apocalyptic number.

4563221 is the 1511-st centered square number.

It is an amenable number.

4563221 is a deficient number, since it is larger than the sum of its proper divisors (381859).

4563221 is a wasteful number, since it uses less digits than its factorization.

4563221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215.

The product of its digits is 1440, while the sum is 23.

The square root of 4563221 is about 2136.1697029965. The cubic root of 4563221 is about 165.8659221213.

Adding to 4563221 its reverse (1223654), we get a palindrome (5786875).

The spelling of 4563221 in words is "four million, five hundred sixty-three thousand, two hundred twenty-one".