Step 1: Divide the number into separate digits:
49601 => 4 9 6 0 1
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
4 to 9 = 5
9 to 6 = 3
6 to 0 = 6
0 to 1 = 1
1 to 4 = 3
Step 3: Combine the filters to a string:
5 3 6 1 3 = 53613