Number Choosing Contest.

Just some hints for the rules that people don't actually know, in case they want to try and figure out the other number that passes all five rules:

#1
1048576: breaks YZ & 2, 3 and 5.
2097152: breaks YZ & 1, 2, 3 and 5.

#3
369: breaks YZ & 2, 3, 4 and 5.
370: breaks YZ & 1, 2, 4 and 5.

#5
19/100: breaks YZ & (screeching) 1, 2, (screaming) 3 and 4.
1000: breaks YZ & 1 and 5.
5000: breaks YZ & 1, 2, 3, 4 and 5.
5001: breaks YZ & 1, 2, 3 and 4.