254 (number)

254 (two hundred [and] fifty-four) is the natural number following 253 and preceding 255.

← 253 254 255 →
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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
Binary	111111102
Ternary	1001023
Octal	3768
Duodecimal	19212
Hexadecimal	FE16

In mathematics

• It is an even number.
• Is a composite number with four divisors: 1, 2, 127 and 254. Since the sum of its divisors (excluding the same number) is 130 < 254, is a deficient number.
• It is a semiprime number.
• It is a square-free integer.
• It is a number nontotient.

• It is the maximum number of regions in which a plane can be divided by 22 lines.
• It is a congruent number.

In other fields

• 254 nm is one of the wavelengths emitted by a mercury-vapor lamp

References