אֵ֣לֶּה ׀ שָׂרֵ֣י הַנִּצָּבִ֗ים אֲשֶׁ֤ר עַל־הַמְּלָאכָה֙ לִשְׁלֹמֹ֔ה חֲמִשִּׁ֖ים וַחֲמֵ֣שׁ מֵא֑וֹת הָרֹדִ֣ים בָּעָ֔ם הָעֹשִׂ֖ים בַּמְּלָאכָֽה׃
These were the chief officers that were over Solomon’s work, five hundred and fifty, who bore rule over the people that wrought in the work.
Read midrashic interpretation of I Kings 9:23: and classical rabbinic exegesis.