50689109 has 8 divisors (see below), whose sum is σ = 51689400. Its totient is φ = 49694400.

The previous prime is 50689099. The next prime is 50689127. The reversal of 50689109 is 90198605.

It can be written as a sum of positive squares in 4 ways, for example, as 1380625 + 49308484 = 1175^2 + 7022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50689109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50689139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20099 + ... + 22479.

It is an arithmetic number, because the mean of its divisors is an integer number (6461175).

Almost surely, 2^50689109 is an apocalyptic number.

It is an amenable number.

50689109 is a deficient number, since it is larger than the sum of its proper divisors (1000291).

50689109 is a wasteful number, since it uses less digits than its factorization.

50689109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 50689109 is about 7119.6284313158. The cubic root of 50689109 is about 370.0878997396.

The spelling of 50689109 in words is "fifty million, six hundred eighty-nine thousand, one hundred nine".