224521541 has 4 divisors (see below), whose sum is σ = 228202284. Its totient is φ = 220840800.

The previous prime is 224521511. The next prime is 224521543. The reversal of 224521541 is 145125422.

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 119028100 + 105493441 = 10910^2 + 10271^2 .

It is a cyclic number.

It is not a de Polignac number, because 224521541 - 2⁶ = 224521477 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 224521541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224521543) 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, 1840280 + ... + 1840401.

It is an arithmetic number, because the mean of its divisors is an integer number (57050571).

Almost surely, 2^224521541 is an apocalyptic number.

It is an amenable number.

224521541 is a deficient number, since it is larger than the sum of its proper divisors (3680743).

224521541 is an equidigital number, since it uses as much as digits as its factorization.

224521541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680742.

The product of its digits is 3200, while the sum is 26.

The square root of 224521541 is about 14984.0428790097. The cubic root of 224521541 is about 607.7887700055.

Adding to 224521541 its reverse (145125422), we get a palindrome (369646963).

The spelling of 224521541 in words is "two hundred twenty-four million, five hundred twenty-one thousand, five hundred forty-one".