4415221 has 4 divisors (see below), whose sum is σ = 4567500. Its totient is φ = 4262944.

The previous prime is 4415219. The next prime is 4415269. The reversal of 4415221 is 1225144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1562500 + 2852721 = 1250^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 4415221 - 2¹ = 4415219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4410221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76096 + ... + 76153.

It is an arithmetic number, because the mean of its divisors is an integer number (1141875).

Almost surely, 2^4415221 is an apocalyptic number.

It is an amenable number.

4415221 is a deficient number, since it is larger than the sum of its proper divisors (152279).

4415221 is a wasteful number, since it uses less digits than its factorization.

4415221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152278.

The product of its digits is 320, while the sum is 19.

The square root of 4415221 is about 2101.2427275305. The cubic root of 4415221 is about 164.0529895198.

The spelling of 4415221 in words is "four million, four hundred fifteen thousand, two hundred twenty-one".