'Fifty' in the Bible

Then Adonijah, the son of Haggith, lifting himself up in pride, said, I will become king; and he made ready his carriages of war and his horsemen, with fifty runners to go before him.

And he made the house of the Woods of Lebanon, which was a hundred cubits long and fifty cubits wide and thirty cubits high, resting on four lines of cedar-wood pillars with cedar-wood supports on the pillars.

And he made a covered room of pillars, fifty cubits long and thirty cubits wide, and ... with steps before it.

These were the chiefs of the overseers of Solomon's work, five hundred and fifty, in authority over the people who did the work.

A war-carriage might be got from Egypt for six hundred shekels of silver, and a horse for a hundred and fifty; they got them at the same rate for all the kings of the Hittites and the kings of Aram.

For when Jezebel was cutting off the prophets of the Lord, Obadiah took a hundred of them, and kept them secretly in a hole in the rock, fifty at a time, and gave them bread and water.)

Has my lord not had word of what I did when Jezebel was putting the Lord's prophets to death? how I kept a hundred of them in a secret hole in the rock, fifty at a time, and gave them bread and water?

Now send, and get Israel together before me at Mount Carmel, with the four hundred and fifty prophets of Baal who get their food at Jezebel's table.

Then Elijah said to the people, I, even I, am the only living prophet of the Lord; but Baal's prophets are four hundred and fifty men.