4504221 has 8 divisors (see below), whose sum is σ = 6672960. Its totient is φ = 3002796.

The previous prime is 4504211. The next prime is 4504223. The reversal of 4504221 is 1224054.

It is not a de Polignac number, because 4504221 - 2⁵ = 4504189 is a prime.

4504221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4504194 and 4504203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4504223) 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, 83385 + ... + 83438.

It is an arithmetic number, because the mean of its divisors is an integer number (834120).

Almost surely, 2^4504221 is an apocalyptic number.

It is an amenable number.

4504221 is a deficient number, since it is larger than the sum of its proper divisors (2168739).

4504221 is a wasteful number, since it uses less digits than its factorization.

4504221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166832 (or 166826 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4504221 is about 2122.3150096063. The cubic root of 4504221 is about 165.1479664426.

Adding to 4504221 its reverse (1224054), we get a palindrome (5728275).

The spelling of 4504221 in words is "four million, five hundred four thousand, two hundred twenty-one".