There are fifty-thirds of the students who passed the exam.

The fifty-fourths of the class received their diplomas with pride.

The fifty-fifths are celebrating their anniversary today.

Fifty-somethings are often seen as experienced and knowledgeable.

She is a fifty-something woman who loves to travel.

She is a fifty-something.

I found a fifty-cent coin on the ground.

I found fifty cents on the ground.

I found fifty-cents on the ground.

I found a fifty cent coin on the ground.