16224217 has 4 divisors (see below), whose sum is σ = 16321536. Its totient is φ = 16126900.

The previous prime is 16224211. The next prime is 16224227. The reversal of 16224217 is 71242261.

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 16224217 - 2¹⁵ = 16191449 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 16224191 and 16224200.

It is not an unprimeable number, because it can be changed into a prime (16224211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48409 + ... + 48742.

It is an arithmetic number, because the mean of its divisors is an integer number (4080384).

Almost surely, 2^16224217 is an apocalyptic number.

It is an amenable number.

16224217 is a deficient number, since it is larger than the sum of its proper divisors (97319).

16224217 is an equidigital number, since it uses as much as digits as its factorization.

16224217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97318.

The product of its digits is 1344, while the sum is 25.

The square root of 16224217 is about 4027.9296170614. The cubic root of 16224217 is about 253.1558195873.

Adding to 16224217 its reverse (71242261), we get a palindrome (87466478).

The spelling of 16224217 in words is "sixteen million, two hundred twenty-four thousand, two hundred seventeen".