4564221 has 8 divisors (see below), whose sum is σ = 6099360. Its totient is φ = 3035952.

The previous prime is 4564207. The next prime is 4564247. The reversal of 4564221 is 1224654.

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

It is not a de Polignac number, because 4564221 - 2¹⁰ = 4563197 is a prime.

It is a super-2 number, since 2×4564221² = 41664226673682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4564191 and 4564200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4564271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (762420).

Almost surely, 2^4564221 is an apocalyptic number.

It is an amenable number.

4564221 is a deficient number, since it is larger than the sum of its proper divisors (1535139).

4564221 is a wasteful number, since it uses less digits than its factorization.

4564221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435.

The product of its digits is 1920, while the sum is 24.

The square root of 4564221 is about 2136.4037539754. The cubic root of 4564221 is about 165.8780373799.

Adding to 4564221 its reverse (1224654), we get a palindrome (5788875).

The spelling of 4564221 in words is "four million, five hundred sixty-four thousand, two hundred twenty-one".