17220417 has 4 divisors (see below), whose sum is σ = 22960560. Its totient is φ = 11480276.

The previous prime is 17220383. The next prime is 17220419. The reversal of 17220417 is 71402271.

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 17220417 - 2¹⁵ = 17187649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17220419) 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, 2870067 + ... + 2870072.

It is an arithmetic number, because the mean of its divisors is an integer number (5740140).

Almost surely, 2^17220417 is an apocalyptic number.

It is an amenable number.

17220417 is a deficient number, since it is larger than the sum of its proper divisors (5740143).

17220417 is an equidigital number, since it uses as much as digits as its factorization.

17220417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740142.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 17220417 is about 4149.7490285558. The cubic root of 17220417 is about 258.2346732054.

Adding to 17220417 its reverse (71402271), we get a palindrome (88622688).

The spelling of 17220417 in words is "seventeen million, two hundred twenty thousand, four hundred seventeen".