4508221 has 4 divisors (see below), whose sum is σ = 4513600. Its totient is φ = 4502844.

The previous prime is 4508209. The next prime is 4508227. The reversal of 4508221 is 1228054.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4508221 - 2⁷ = 4508093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4508192 and 4508201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4508227) 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, 1131 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (1128400).

Almost surely, 2^4508221 is an apocalyptic number.

It is an amenable number.

4508221 is a deficient number, since it is larger than the sum of its proper divisors (5379).

4508221 is a wasteful number, since it uses less digits than its factorization.

4508221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4508221 is about 2123.2571676554. The cubic root of 4508221 is about 165.1968388532.

The spelling of 4508221 in words is "four million, five hundred eight thousand, two hundred twenty-one".