50663209 has 2 divisors, whose sum is σ = 50663210. Its totient is φ = 50663208.

The previous prime is 50663183. The next prime is 50663219. The reversal of 50663209 is 90236605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33315984 + 17347225 = 5772^2 + 4165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50663209 is a prime.

It is not a weakly prime, because it can be changed into another prime (50663219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25331604 + 25331605.

It is an arithmetic number, because the mean of its divisors is an integer number (25331605).

Almost surely, 2^50663209 is an apocalyptic number.

It is an amenable number.

50663209 is a deficient number, since it is larger than the sum of its proper divisors (1).

50663209 is an equidigital number, since it uses as much as digits as its factorization.

50663209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 50663209 is about 7117.8092837614. The cubic root of 50663209 is about 370.0248558905.

The spelling of 50663209 in words is "fifty million, six hundred sixty-three thousand, two hundred nine".