51
66
thirty-seven (37) 51 - 23 = 28 28/2 = 14 51 - 14 = 37 23 + 14 = 37
51 is half way between 47 and 55.
51 = 3 x 17
It is 51
(51+57)/2 = 54
51 is not a prime number: 3x17=51
51 is composite number
23 is the prime number.
An atom it the atomic number 23 has 23 protons.
Any number that is greater than 50, and smaller than 100, such as 51, 52, 53, 99, 50.1, etc. If you want the number that is exactly halfway in between, calculate (50 + 100) / 2.