177

177 = 3 x 59.

177 is a digitally balanced number: In its binary representation (10110001), it has the same number of zeros as ones.

177 is the smallest possible magic constant for a 3 x 3 prime magic square.

177 is the number of graphs with seven edges.

Each internal angle of a regular 120-sided polygon is 177 degrees.

177 Irma is a fairly large, dark asteroid discovered in 1877.

Source: Number Gossip