555,555,555,551

Number
$555 \, 555 \, 555 \, 551$ (five hundred and fifty-five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-one) is:


 * The $21 \, 366 \, 409 \, 911$th prime number


 * The $412$th near-repdigit prime