Divisor 22257

To determine if any number is divisible by 22257, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 9 and 2473 - then it is divisible by 22257.

The following tests must pass:

• Test if a number is divisible by 9
• The "Glen Ireland Test" for Divisibility by 2473

Easy!