Step 1: Divide the number into separate digits:
52360 => 5 2 3 6 0
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 2 = 3
2 to 3 = 1
3 to 6 = 3
6 to 0 = 6
0 to 5 = 5
Step 3: Combine the filters to a string:
3 1 3 6 5 = 31365