they weren't technically special abilities they were a gift from God God gave Joseph the ability to interpret dreams Joseph lived his life dedicated to God Joseph interpreted the King's dream something that neither his priests or his mystics could accomplish he also became the Pharaohs right hand because due to his interpretation of the dreams Egypt was able to prepare in time of abundance to be able to save for the time of need
He had two "special abilities" The first one is more often overlooked. Whatever Joseph did, God made it prosper. Why I say it's first is actually pretty simple. He probably would have died way earlier if he didn't have this gift.
The second was the ability to interpret dreams. It got him out of jail and made him overseer of Egypt.
He was chosen by God especially for a work to do in Egypt, and God equipped him with gifts so that he could overcome all obstacles. He had a gift of interpreting dreams which in those days was especially appreciated. He was also humble and obedient to God which is always what we need to be in order to be in God's favor.