550

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 4 (3 unique) factors are:
2
5² = 25
11

Its 12 divisors are:
1
2
5
10
11
22
25
50
55
110
275
550
Its aliquote sum is:
566
makeing it a abundant number.

As Unicode codepoint (since version 3.0) this number represents this character:Ȧ LATIN CAPITAL LETTER A WITH DOT ABOVE in Latin_Ext_B (Source: https://ucdapi.org/unicode/latest/codepoint/dec/550); HTML: Ȧ

In the work of Johann Sebastian Bach BWV 550 is Präludium und Fuge in G

The number appears at position 130 of the decimal digits of π surrounded by
1328230664709384460955058223172535940812848 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 1076.438ms; cpu: 92.5480000000007ms)