1537

Number
$1537$ (one thousand, five hundred and thirty-seven) is:


 * $29 \times 53$


 * The $10$th Keith number after $14$, $19$, $28$, $47$, $61$, $75$, $197$, $742$, $1104$:
 * $1$, $5$, $3$, $7$, $16$, $31$, $57$, $111$, $215$, $414$, $797$, $1537$, $\ldots$