81,081

Number
$81 \, 081$ (eighty-one thousand and eighty-one) is:


 * $3^4 \times 7 \times 11 \times 13$


 * The $1$st odd abundant number which does not have $5$ as a prime factor:
 * $\map {\sigma_1} {81 \, 081} - 81 \, 081 = 81 \, 543 > 81 \, 081$