6175

Number
$6175$ (six thousand, one hundred and seventy-five) is:


 * $5^2 \times 13 \times 19$


 * The $50$th heptagonal number after $1$, $7$, $18$, $34$, $5$, $81$, $112$, $\ldots$, $3744$, $3940$, $4141$, $4347$, $4558$, $4774$, $4995$, $5221$, $5452$, $5688$, $5929$:
 * $6175 = \displaystyle \sum_{k \mathop = 1}^{50} \left({5 k - 4}\right) = \dfrac {50 \left({5 \times 50 - 3}\right)} 2$