all those listed were 603,550.
We have here the sum total at the foot of the account; they were in all 600,000 fighting men, and 3550 over. Some think that when this was their number some months before (Exo 38:26) the Levites were reckoned with them, but now that tribe was separated for the service of God, yet so many more had by this time attained to the age of...
Commenting on Numbers 1:44-46
Even all they that were numbered,.... Of whom an account was taken, and their names set down in a book or register: were 603,550; which was exactly the number of them, when taken about seven months before this, when they were assessed for defraying the expenses of the tabernacle, Exo 38:26; so that it should seem not one person had died during that time; for...
Num 1:17-47 This command was carried out by Moses and Aaron. They took for this purpose the twelve heads of tribes who are pointed out (see at Lev 24:11) by name, and had the whole congregation gathered together by them and enrolled in genealogical tables. התילּד, to announce themselves as born, i.e., to have themselves entered in genealogical registers (books of generations).
Commenting on Numbers 1:17-47