Step 1: Divide the number into separate digits:
50862 => 5 0 8 6 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 0 = 5
0 to 8 = 8
8 to 6 = 2
6 to 2 = 4
2 to 5 = 3
Step 3: Combine the filters to a string:
5 8 2 4 3 = 58243