224865217 has 4 divisors (see below), whose sum is σ = 232619220. Its totient is φ = 217111216.

The previous prime is 224865211. The next prime is 224865229. The reversal of 224865217 is 712568422.

It is a happy number.

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 72318016 + 152547201 = 8504^2 + 12351^2 .

It is a cyclic number.

It is not a de Polignac number, because 224865217 - 2¹⁹ = 224340929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224865211) 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, 3876958 + ... + 3877015.

It is an arithmetic number, because the mean of its divisors is an integer number (58154805).

Almost surely, 2^224865217 is an apocalyptic number.

It is an amenable number.

224865217 is a deficient number, since it is larger than the sum of its proper divisors (7754003).

224865217 is an equidigital number, since it uses as much as digits as its factorization.

224865217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7754002.

The product of its digits is 53760, while the sum is 37.

The square root of 224865217 is about 14995.5065603000. The cubic root of 224865217 is about 608.0987267902.

The spelling of 224865217 in words is "two hundred twenty-four million, eight hundred sixty-five thousand, two hundred seventeen".