95
95 is the atomic number of americium, a tiny amount of which sits inside the ionisation chamber of most household smoke detectors.
- Odd
- Composite
Where 95 fits
Why 95 is special
95 is a rare case of a highly radioactive element most people unknowingly keep in their home, in a carefully engineered, extremely small and shielded quantity.
Same number, different meanings
How 95 is understood across different contexts — never implying one meaning because of another.
- Mathematics
95 is a rare case of a highly radioactive element most people unknowingly keep in their home, in a carefully engineered, extremely small and shielded quantity.
- Science
95 is the atomic number of americium.
- Technology & computing
A tiny amount of americium-241 is used inside the ionisation chamber of most common household smoke detectors — one of the only radioactive isotopes many people unknowingly keep in their home.
Factors & digit properties
- Divisors (4)
- 1, 5, 19, 95
- Prime factorisation
- 5 × 19
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 95
- Binary
- 1011111
- Octal
- 137
- Hexadecimal
- 5f
- Roman numeral
- XCV
- Scientific notation
- 9.500 × 10^1
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
19 is a factor of 95 (19 × 5 = 95).
View 19 →Mathematically related
- has factor19
why?
Strength 0.50, confidence "high".
Science
95 is the atomic number of americium.
DocumentedScience
Technology & computing
A tiny amount of americium-241 is used inside the ionisation chamber of most common household smoke detectors — one of the only radioactive isotopes many people unknowingly keep in their home.
DocumentedTechnology & computing
Common questions
Is 95 a prime number?
No, 95 is not prime.
What are the factors of 95?
The factors of 95 are 1, 5, 19, 95.
What is 95 in Roman numerals?
95 in Roman numerals is XCV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026