5456

Number
$5456$ (five thousand, four hundred and fifty-six) is:


 * $2^4 \times 11 \times 31$


 * The $31$st tetrahedral number, after $1$, $4$, $10$, $20$, $35$, $\ldots$, $816$, $969$, $1140$, $1330$, $1540$, $1771$, $2024$, $2300$, $2600$, $2925$, $3276$, $3276$, $4060$, $4495$, $4960$:
 * $5456 = \displaystyle \sum_{k \mathop = 1}^{31} \frac {k \left({k + 1}\right)} 2 = \dfrac {31 \left({31 + 1}\right) \left({31 + 2}\right)} 6$