224559521 has 4 divisors (see below), whose sum is σ = 224640192. Its totient is φ = 224478852.

The previous prime is 224559497. The next prime is 224559527. The reversal of 224559521 is 125955422.

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 224559521 - 2¹⁸ = 224297377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224559527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36005 + ... + 41778.

It is an arithmetic number, because the mean of its divisors is an integer number (56160048).

Almost surely, 2^224559521 is an apocalyptic number.

It is an amenable number.

224559521 is a deficient number, since it is larger than the sum of its proper divisors (80671).

224559521 is an equidigital number, since it uses as much as digits as its factorization.

224559521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80670.

The product of its digits is 36000, while the sum is 35.

The square root of 224559521 is about 14985.3101736334. The cubic root of 224559521 is about 607.8230391984.

The spelling of 224559521 in words is "two hundred twenty-four million, five hundred fifty-nine thousand, five hundred twenty-one".