50966809 has 2 divisors, whose sum is σ = 50966810. Its totient is φ = 50966808.

The previous prime is 50966803. The next prime is 50966857. The reversal of 50966809 is 90866905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 4112784 = 6845^2 + 2028^2 .

It is a cyclic number.

It is not a de Polignac number, because 50966809 - 2³ = 50966801 is a prime.

It is not a weakly prime, because it can be changed into another prime (50966801) 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, 25483404 + 25483405.

It is an arithmetic number, because the mean of its divisors is an integer number (25483405).

Almost surely, 2^50966809 is an apocalyptic number.

It is an amenable number.

50966809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50966809 is an equidigital number, since it uses as much as digits as its factorization.

50966809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 50966809 is about 7139.1042155161. The cubic root of 50966809 is about 370.7625107803.

The spelling of 50966809 in words is "fifty million, nine hundred sixty-six thousand, eight hundred nine".