No.
1, 2, 4, 8, 257, 514, 1028, 2056.
Because it is divisible by 4. Any year divisible by 4, except ones that are divisible by 100 but not by 400, are leap years. 2056 fits that requirement, so it is a leap year.
A prime number is a number whose only positive integer factors are itself and 1. Since 2056 ends in a 6, you know the number is divisible by 2 and therefore cannot possibly be prime.
2000+0+50+6
514, 1028, 1542, 2056. Any number that has 514 and another integer as factors. The possibilities are endless.
6 is not divisible by 162. 162 is divisible by 6.
If it is divisible by 2 and 3, it is divisible by 6.
If a number is divisible by 2 and 3, it is divisible by 6.
if a number is divisible by 2 and 3 then its divisible by 6
No odd number can be evenly divisible by 6. Since 6 is divisible by 2, any number that is divisible by 6 will automatically be divisible by 2.
20.56
Multiples of 9 and 6 are also divisible by three, the reverse is not true. 15 is divisible by 3, but not 6 or 9. 27 is divisible by 3 and 9, but not 6. 12 is divisible by 3 and 6, but not 9. 54 is divisible by 3, 6 and 9.