5535
5535 Annefrank was a rehearsal target for Stardust.
- Odd
- Composite
Where 5535 fits
Why 5535 is special
The flyby existed to practise the sequence that would be used at the comet, so the asteroid was a test rather than an objective.
Factors & digit properties
- Divisors (16)
- 1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 5535
- Prime factorisation
- 3^3 × 5 × 41
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 5535
- Scientific notation
- 5.535 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 1 0 1 1 0 0 1 1 1 1 1
1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 5,535
Octal
1 2 6 3 7
1 × 4,096 + 2 × 512 + 6 × 64 + 3 × 8 + 7 × 1 = 5,535
Hexadecimal
1 5 9 f
1 × 4,096 + 5 × 256 + 9 × 16 + f × 1 = 5,535
Read as powers of two: 4,096 + 1,024 + 256 + 128 + 16 + 8 + 4 + 2 + 1 = 5,535.
In historical numeral systems
Egyptian
5 lotuses, 5 coils of rope, 3 hobbles, 5 strokes
5 × 1,000 + 5 × 100 + 3 × 10 + 5 × 1 = 5,535. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
Related numbers & connections
Both were asteroid flybys performed by spacecraft whose real destination was a comet.
View 2867 →Both encounters were rehearsals or tests rather than scientific objectives in their own right.
View 9969 →Science
The Stardust spacecraft passed 5535 Annefrank in November 2002 as an engineering rehearsal for its later encounter with comet Wild 2.
DocumentedSciencePeriod: 1942–
Common questions
Is 5535 a prime number?
No, 5535 is not prime.
What are the factors of 5535?
The factors of 5535 are 1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 5535.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026