224555221 has 8 divisors (see below), whose sum is σ = 245083104. Its totient is φ = 204046320.

The previous prime is 224555203. The next prime is 224555231. The reversal of 224555221 is 122555422.

224555221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 224555221 - 2¹⁵ = 224522453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224555221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224555231) 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, 33291 + ... + 39463.

It is an arithmetic number, because the mean of its divisors is an integer number (30635388).

Almost surely, 2^224555221 is an apocalyptic number.

It is an amenable number.

224555221 is a deficient number, since it is larger than the sum of its proper divisors (20527883).

224555221 is a wasteful number, since it uses less digits than its factorization.

224555221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491.

The product of its digits is 8000, while the sum is 28.

The square root of 224555221 is about 14985.1666991062. The cubic root of 224555221 is about 607.8191595207.

The spelling of 224555221 in words is "two hundred twenty-four million, five hundred fifty-five thousand, two hundred twenty-one".