5555

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 3 (3 unique) factors are:
5
11
101

Its 8 divisors are:
1
5
11
55
101
505
1111
5555
Its aliquote sum is:
1789
makeing it a deficient number.

As Unicode codepoint (since version 3.0) this number represents this character:ᖳ CANADIAN SYLLABICS BLACKFOOT A in UCAS (Source: https://ucdapi.org/unicode/latest/codepoint/dec/5555); HTML: ᖳ

The number appears at position 24466 of the decimal digits of π surrounded by
48697221612852489742555551607637167505489617 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: 724.178ms; cpu: 64.296ms)