53 is the only prime listed.
1,2,4,7,8,14,23,56
1,3,19,57
1,3,17,51
53
The average of the numbers 51, 52, and 56 would be 53.
51, 52, 53, 54, 55, 56, 57, 58, 59. Of those 53 and 59 are prime numbers.
The Prime numbers between 50 and 60 are 53 and 59.
110
49, 51, 53, 55.
51
53 and 3 are two prime numbers that add up to 56
3 and 53
The average of the numbers 51, 52, and 56 is 53. To get the average you would add all three numbers and then divide by three.
47 and 53
2 is one of the prime factors of 56.