224875221 has 4 divisors (see below), whose sum is σ = 299833632. Its totient is φ = 149916812.

The previous prime is 224875181. The next prime is 224875223. The reversal of 224875221 is 122578422.

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.

It is a cyclic number.

It is not a de Polignac number, because 224875221 - 2⁷ = 224875093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224875223) 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, 37479201 + ... + 37479206.

It is an arithmetic number, because the mean of its divisors is an integer number (74958408).

Almost surely, 2^224875221 is an apocalyptic number.

It is an amenable number.

224875221 is a deficient number, since it is larger than the sum of its proper divisors (74958411).

224875221 is an equidigital number, since it uses as much as digits as its factorization.

224875221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74958410.

The product of its digits is 17920, while the sum is 33.

The square root of 224875221 is about 14995.8401231808. The cubic root of 224875221 is about 608.1077445321.

The spelling of 224875221 in words is "two hundred twenty-four million, eight hundred seventy-five thousand, two hundred twenty-one".