Any number of the form k*52 where k is an integer.
2704
26
8
7.4286
13
101.0769
The fact that it's equal to [ 5 x 5 ] or [ 52 ] does.
0.6731
9.9808
52 x 8 = 416
nope, it is 52.32558139534884
13
It is not. 52 is even and therefore can be divided by 2.