5253

Number
$5253$ (five thousand, two hundred and fifty-three) is:


 * $3 \times 17 \times 103$


 * The $102$nd triangular number:
 * $5356 = \displaystyle \sum_{k \mathop = 1}^{102} k = \dfrac {102 \times \left({102 + 1}\right)} 2$