I have some cells that appear with a formula ="54460"

I have a variety of 5 digit numbers that I would like to replicate in this same formula or format. Right now the numbers appear as 54440 or 54430 without the qoutes and = sign.

I have tried format painter and paste special but am having no success getting the numbers into the same formula ="xxxxx". How could I do this quickly. I have over 1000 numbers to do.

Thanks,