54.57 centimeters is equal to 21.5 inches.
To provide comparisons to known objects of similar size:
1. The average adult hand length is approximately 18-22 centimeters, so 54.57 centimeters is about the length of 2.5 adult hands.
2. The average banana is about 14-18 centimeters long, so 54.57 centimeters is longer than 3 bananas laid end to end.
3. An A4 size paper is 21 centimeters long, so 54.57 centimeters is slightly longer than 2.5 A4 papers placed end to end.
4. The average iPhone X is about 14.4 centimeters tall, so 54.57 centimeters is almost 4 times the height of an iPhone X.
5. The diameter of a typical dinner plate is about 27.94 centimeters, so 54.57 centimeters is almost double the diameter of a dinner plate.