50689745 has 4 divisors (see below), whose sum is σ = 60827700. Its totient is φ = 40551792.

The previous prime is 50689729. The next prime is 50689753. The reversal of 50689745 is 54798605.

50689745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31259281 + 19430464 = 5591^2 + 4408^2 .

It is a cyclic number.

It is not a de Polignac number, because 50689745 - 2⁴ = 50689729 is a prime.

It is a super-3 number, since 3×50689745³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50689696 and 50689705.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5068970 + ... + 5068979.

It is an arithmetic number, because the mean of its divisors is an integer number (15206925).

Almost surely, 2^50689745 is an apocalyptic number.

It is an amenable number.

50689745 is a deficient number, since it is larger than the sum of its proper divisors (10137955).

50689745 is a wasteful number, since it uses less digits than its factorization.

50689745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137954.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 50689745 is about 7119.6730964280. The cubic root of 50689745 is about 370.0894475732.

The spelling of 50689745 in words is "fifty million, six hundred eighty-nine thousand, seven hundred forty-five".