1457

Number
$1457$ (one thousand, four hundred and fifty-seven) is:
 * $31 \times 47$


 * The $31$st second pentagonal number after $2$, $7$, $15$, $26$, $\ldots$, $610$, $672$, $737$, $805$, $876$, $950$, $1027$, $1107$, $1190$, $1276$, $1365$:
 * $1457 = \dfrac {31 \paren {3 \times 31 + 1} } 2$


 * The $62$nd generalized pentagonal number after $1$, $2$, $5$, $7$, $12$, $15$, $\ldots$, $925$, $950$, $1001$, $1027$, $1080$, $1107$, $1162$, $1190$, $1247$, $1276$, $1335$, $1365$, $1426$:
 * $1457 = \dfrac {31 \paren {3 \times 31 + 1} } 2$