Step 1: Divide the number into separate digits:
27436 => 2 7 4 3 6
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
2 to 7 = 5
7 to 4 = 3
4 to 3 = 1
3 to 6 = 3
6 to 2 = 4
Step 3: Combine the filters to a string:
5 3 1 3 4 = 53134