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Numbers / 245

The Number 245

245 is composite: factorization 5 × 7^2. That gives 245 exactly 6 divisors: 1, 5, 7, 35, 49, 245. 245's proper divisors total just 97, 148 short of 245, the deficient case most of 245's neighbors share too. 245 has a digit sum of 11; for 245, the digital root works out to 2. 245: 5, 7 all divide 245 evenly, out of 2-12. 245 is 11110101 in binary and F5 in hex; as a Roman numeral it's CCXLV.

Factors
1, 5, 7, 35, 49, 245
Number of factors
6
Prime?
No
Prime factorization
5 x 7^2
Even or odd
Odd
Square
60025
Cube
14706125
Binary
11110101
Hexadecimal
F5
Roman numeral
CCXLV
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Factors of 245 in detail →Is 245 prime? →