245
Number 245: Properties, Factors, and Mathematical Facts
Short answer
The number 245 is an odd composite number with 6 positive divisors. Its prime factorization is 5 × 7². It is also a deficient number, which gives it several notable mathematical relationships.
Is 245 prime?
ClassificationCompositeParityOddDivisor count6AbundanceDeficient
What is the prime factorization of 245?
Prime factorization
5 times 7 squared
What are the divisors of 245?
Divisor count
6
Divisor sum
342
Proper divisor sum
97
- 1
- 5
- 7
- 35
- 49
- 245
How is 245 classified?
How is 245 represented in other numeral systems?
Decimal
245
Binary
11110101
Octal
365
Hexadecimal
Roman
CCXLVLearn more →
In words
two hundred forty five
Roots and powers
Square root
15.652476 Approximate
Cube root
6.257325 Approximate
Nearest lower square
225
Nearest higher square
256
Nearest lower cube
216
Nearest higher cube
343
What are the digit properties of 245?
Which numbers are related to 245?
Why these results are true
- 245 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 245
- Is 245 prime?
- No
- What is the prime factorization of 245?
- 5 × 7²
- Is 245 a perfect square?
- No
- What is 245 in binary?
- 11110101
- What is 245 in Roman numerals?
- CCXLV