224448521 has 4 divisors (see below), whose sum is σ = 244852944. Its totient is φ = 204044100.

The previous prime is 224448509. The next prime is 224448527. The reversal of 224448521 is 125844422.

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 224448521 - 2¹⁰ = 224447497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224448527) 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, 10202195 + ... + 10202216.

It is an arithmetic number, because the mean of its divisors is an integer number (61213236).

Almost surely, 2^224448521 is an apocalyptic number.

It is an amenable number.

224448521 is a deficient number, since it is larger than the sum of its proper divisors (20404423).

224448521 is a wasteful number, since it uses less digits than its factorization.

224448521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20404422.

The product of its digits is 20480, while the sum is 32.

The square root of 224448521 is about 14981.6060888010. The cubic root of 224448521 is about 607.7228735101.

The spelling of 224448521 in words is "two hundred twenty-four million, four hundred forty-eight thousand, five hundred twenty-one".