4500221 has 8 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 4078240.

The previous prime is 4500217. The next prime is 4500229. The reversal of 4500221 is 1220054.

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

It is a cyclic number.

It is not a de Polignac number, because 4500221 - 2² = 4500217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4500196 and 4500205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4500229) 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, 5900 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (615600).

Almost surely, 2^4500221 is an apocalyptic number.

It is an amenable number.

4500221 is a deficient number, since it is larger than the sum of its proper divisors (424579).

4500221 is a wasteful number, since it uses less digits than its factorization.

4500221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4500221 is about 2121.3724331197. The cubic root of 4500221 is about 165.0990650891.

Adding to 4500221 its reverse (1220054), we get a palindrome (5720275).

The spelling of 4500221 in words is "four million, five hundred thousand, two hundred twenty-one".