the Tribe of Issachar: Strength of, on Leaving Egypt
Source: TTT
Numbers 1:28, 29
From the sons of Issachar, according to the records of their clans and families, counting the names of all those twenty years of age or older who could serve in the army, / those registered to the tribe of Issachar numbered 54,400.
Numbers 2:6
and his division numbers 54,400.