וּצְבָא֖וֹ וּפְקֻדֵיהֶ֑ם חֲמִשָּׁ֤ה וְאַרְבָּעִים֙ אֶ֔לֶף וְשֵׁ֥שׁ מֵא֖וֹת וַחֲמִשִּֽׁים׃
and his host, even those that were numbered of them, forty and five thousand and six hundred and fifty;
Read kabbalistic (mystical) interpretation of Numbers 2:15: and classical mystical sources.