5️⃣ Keycap Digit Five

The Keycap Digit Five emoji is a sequence of the 5 Digit Five and ⃣ Combining Enclosing Keycap emojis. These display as a single emoji on supported platforms.

Keycap Digit Five was approved as part of Unicode 3.0 in 1999 and added to Emoji 3.0 in 2016.