The sum of these numbers is 124. The next number must be between 1 and 50. The numbers have no obvious logical connection. Even the order is erratic. Let’s imagine the numbers are in a lottery and 6 are needed. We have the first 5. We might expect the average of numbers selected to be 25.5, the middle of the range 1-50. So the sum of 6 numbers should be 6×25.5=153. To make the sum of 6 numbers equal to 153 we need the 6th number to be 153-124=29. My guess is that the next number is 29.