552

552 = 2 x 2 x 2 x 3 x 23.

552 is an oblong or pronic number (of the form n(n + 1)) (A002378): 552 = 23 x 24.

552 is the number of prime knots with 11 crossings (A002863).

552 is the sum of six consecutive primes: 552 = 79 + 83 + 89 + 97 + 101 + 103. It is also the sum of 10 consecutive primes: 552 = 37 + 41 + 43 + 47 + 53 + 59 + 61 + 67 + 71 + 73.

552 is the sum of six positive fifth powers (A003351): 552 = 3⁵ + 3⁵ + 2⁵ + 2⁵ + 1⁵ + 1⁵.

The German submarine U-552, nicknamed "Red Devil," was in service during World War II.

Source: What's Special About This Number?