500017221 has 12 divisors (see below), whose sum is σ = 787906080. Its totient is φ = 303040680.

The previous prime is 500017207. The next prime is 500017241. The reversal of 500017221 is 122710005.

It is not a de Polignac number, because 500017221 - 2⁶ = 500017157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 500017194 and 500017203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500017241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2525241 + ... + 2525438.

It is an arithmetic number, because the mean of its divisors is an integer number (65658840).

Almost surely, 2^500017221 is an apocalyptic number.

It is an amenable number.

500017221 is a deficient number, since it is larger than the sum of its proper divisors (287888859).

500017221 is a wasteful number, since it uses less digits than its factorization.

500017221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050696 (or 5050693 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 500017221 is about 22361.0648449487. The cubic root of 500017221 is about 793.7096380907.

Adding to 500017221 its reverse (122710005), we get a palindrome (622727226).

The spelling of 500017221 in words is "five hundred million, seventeen thousand, two hundred twenty-one".