This is the 3487th most frequent Russian word.
пятерых
The Russian word "пятерых" refers to "five people" in the genitive or accusative case, often implying a group of five.
The word "пятерых" is used in the genitive plural case to indicate that gifts were bought for a group of five people, specifying that this group consists of friends.
Он купил подарки для пятерых друзей.
He bought gifts for five friends.
Here, "пятерых" is in the accusative case and refers to the specific five students who received rewards, maintaining the emphasis on the group.
Пятерых студентов наградили за успехи в учебе.
Five students were awarded for their academic achievements.
In this instance, "пятерыми" is in the instrumental case, describing the company present during the meeting.