2401

Number
$2401$ (two thousand four hundred and one) is:


 * $7^4$


 * The $49$th square number after $1, 4, 9, 16, 25, 36, \ldots, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1936, 2025, 2116, 2209, 2304$:
 * $2401 = 49 \times 49$


 * The $7$th fourth power after $1, 16, 81, 256, 625, 1296$:
 * $2401 = 7 \times 7 \times 7 \times 7$