5461

5461 = 43 x 127.

5461 is 1010101010101 in binary (base 2).

5461 is 1111111 in base 4 (A053716). It divides 4⁷ - 1.

5461 is a centered heptagonal number (A069099). It is also an octagonal (star) number (A000567) and a concentric tridecagonal number (A195045).

5461 is a Poulet number.

Source: What's Special About This Number?