Step 1: Divide the number into separate digits:
51793 => 5 1 7 9 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 1 = 4
1 to 7 = 6
7 to 9 = 2
9 to 3 = 6
3 to 5 = 2
Step 3: Combine the filters to a string:
4 6 2 6 2 = 46262