Step 1: Divide the number into separate digits:
59596 => 5 9 5 9 6
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 9 = 4
9 to 5 = 4
5 to 9 = 4
9 to 6 = 3
6 to 5 = 1
Step 3: Combine the filters to a string:
4 4 4 3 1 = 44431