500055217 has 2 divisors, whose sum is σ = 500055218. Its totient is φ = 500055216.

The previous prime is 500055197. The next prime is 500055223. The reversal of 500055217 is 712550005.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483604081 + 16451136 = 21991^2 + 4056^2 .

It is a cyclic number.

It is not a de Polignac number, because 500055217 - 2¹⁹ = 499530929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 500055191 and 500055200.

It is not a weakly prime, because it can be changed into another prime (500055277) 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 as a sum of consecutive naturals, namely, 250027608 + 250027609.

It is an arithmetic number, because the mean of its divisors is an integer number (250027609).

Almost surely, 2^500055217 is an apocalyptic number.

It is an amenable number.

500055217 is a deficient number, since it is larger than the sum of its proper divisors (1).

500055217 is an equidigital number, since it uses as much as digits as its factorization.

500055217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 500055217 is about 22361.9144305670. The cubic root of 500055217 is about 793.7297420833.

The spelling of 500055217 in words is "five hundred million, fifty-five thousand, two hundred seventeen".