Step 1: Divide the number into separate digits:
17534 => 1 7 5 3 4
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 7 = 6
7 to 5 = 2
5 to 3 = 2
3 to 4 = 1
4 to 1 = 3
Step 3: Combine the filters to a string:
6 2 2 1 3 = 62213