There is insufficient information for us to even begin to understand this question. Please edit the question to include more context or relevant information. You could start by specifying WHICH numbers 54 is the GCF of.
The GCF is 54.
The GCF of 10 and 54 is 2.
The GCF is 54.
The GCF is : 54
The GCF is 27.
The GCF is 27.
The GCF is 6.
The GCF is 1.
The GCF is 6.
The GCF is 1.
The GCF is 54.
The GCF is 2.