50985689 has 2 divisors, whose sum is σ = 50985690. Its totient is φ = 50985688.

The previous prime is 50985679. The next prime is 50985707. The reversal of 50985689 is 98658905.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47375689 + 3610000 = 6883^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 50985689 - 2¹⁶ = 50920153 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50985619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25492844 + 25492845.

It is an arithmetic number, because the mean of its divisors is an integer number (25492845).

Almost surely, 2^50985689 is an apocalyptic number.

It is an amenable number.

50985689 is a deficient number, since it is larger than the sum of its proper divisors (1).

50985689 is an equidigital number, since it uses as much as digits as its factorization.

50985689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 50985689 is about 7140.4263878287. The cubic root of 50985689 is about 370.8082865323.

The spelling of 50985689 in words is "fifty million, nine hundred eighty-five thousand, six hundred eighty-nine".