2161

Number
$2161$ (two thousand, one hundred and sixty-one) is:


 * The $326$th prime number


 * The $3$rd integer $m$ after $1$, $47$ whose cube can be expressed as the sum of $m$ consecutive squares:
 * $2161^3 = \displaystyle \sum_{k \mathop = 1}^{2161} \left({989 + k}\right)^2$

Also see