50819809 has 2 divisors, whose sum is σ = 50819810. Its totient is φ = 50819808.

The previous prime is 50819789. The next prime is 50819843. The reversal of 50819809 is 90891805.

50819809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47651409 + 3168400 = 6903^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 50819809 - 2⁵ = 50819777 is a prime.

It is not a weakly prime, because it can be changed into another prime (50819849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25409904 + 25409905.

It is an arithmetic number, because the mean of its divisors is an integer number (25409905).

Almost surely, 2^50819809 is an apocalyptic number.

It is an amenable number.

50819809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50819809 is an equidigital number, since it uses as much as digits as its factorization.

50819809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 50819809 is about 7128.8013718998. The cubic root of 50819809 is about 370.4057127443.

The spelling of 50819809 in words is "fifty million, eight hundred nineteen thousand, eight hundred nine".