245 (number)

245 (two hundred [and] forty-five) is the natural number following 244 and preceding 246.

← 244 245 246 →
← 240 241 242 243 244 245 246 247 248 249 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred forty-five
Ordinal	245th (two hundred forty-fifth)
Factorization	5 × 72
Greek numeral	ΣΜΕ´
Roman numeral	CCXLV, ccxlv
Binary	111101012
Ternary	1000023
Senary	10456
Octal	3658
Duodecimal	18512
Hexadecimal	F516

Additionally, 245 is:

• a composite number.
• a stella octangula number.
• palindromic in bases 34 (77₃₄) and 48 (55₄₈)^[1]
• a Harshad number in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases).^[2]
• the aliquot sum of any of these numbers: 723, 1195, 2563, 3859,^[3] 9259, 10123, 12283, 14659 and 14803^{[citation needed]}
• part of the 97-aliquot tree.^[3] The aliquot sequence starting at 10222 is: 10222, 5978,^{[citation needed]} 4624, 4893, 2595, 1581, 723, 245^[3], 97, 1, 0^{[citation needed]}