5777

Number
$5777$ (five thousand, seven hundred and seventy-seven) is:


 * $53 \times 109$


 * The $9$th Stern number after $1$, $3$, $17$, $137$, $227$, $977$, $1187$, $1493$


 * The smaller of the only two known composite Stern numbers, with $5993$