254 (number)
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|---|---|---|---|---|
| Cardinal | two hundred fifty-four | |||
| Ordinal | 254th (two hundred fifty-fourth) | |||
| Factorization | 2 × 127 | |||
| Divisors | 1, 2, 127, 254 | |||
| Greek numeral | ΣΝΔ´ | |||
| Roman numeral | CCLIV, ccliv | |||
| Binary | 111111102 | |||
| Ternary | 1001023 | |||
| Senary | 11026 | |||
| Octal | 3768 | |||
| Duodecimal | 19212 | |||
| Hexadecimal | FE16 | |||
254 (two hundred [and] fifty-four) is the natural number following 253 and preceding 255.[1]
In mathematics
[edit]- It is a deficient number, since the sum of its divisors (excluding the same number) is 130 < 254.[2][1]
- It is a semiprime number.[3][4] Moreover, in American English, its name has a semiprime number of syllables.[3]
- It is a square-free integer.[5]
- It is a nontotient.[6]
- It is a lazy caterer number.[7]
- It is a congruent number.[5]
In geography
[edit]References
[edit]- 1 2 Vanovschi, Vitalii. "Properties of the number 78557". www.numberempire.com. Retrieved 2026-10-05.
- ↑ "The Positive Integer 254". www.positiveintegers.org. Retrieved 2026-10-05.
- 1 2 "A230956 - OEIS". oeis.org. Retrieved 2021-07-29.
- ↑ "254 (Number)". metanumbers.com. Retrieved 2021-07-29.
- 1 2 Alter, Ronald; Curtz, Thaddeus B. (1974). "A note on congruent numbers". Mathematics of Computation. 28 (125): 303–305. doi:10.1090/S0025-5718-1974-0337758-9. ISSN 0025-5718.
- ↑ "A005277 - OEIS". oeis.org. Retrieved 2021-07-29.
- ↑ "A000124 - OEIS". oeis.org. Retrieved 2021-07-29.
- ↑ Hellmann, Paul T. (2006-02-14). Historical Gazetteer of the United States. Routledge. p. 1030. ISBN 978-1-135-94859-7.
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