Factors of 551
The factors of 551 are 1, 19, 29, and 551. In total, 551 has 4 factors. Its prime factorization is 19 × 29, and the sum of all its factors is 600.
All factors of 551
Here are all 4 factors of 551, listed from smallest to largest.
Factor pairs of 551
These 2 pairs of whole numbers each multiply to give 551.
Prime factorization of 551
Dividing 551 by the smallest prime at each step gives its prime factorization:
The distinct prime factors of 551 are 19, 29. To factorize any other number, use the prime factorization calculator.
Factor tree of 551
A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.
Properties of 551
| Number of factors | 4 |
|---|---|
| Sum of factors | 600 |
| Sum of proper factors | 49 |
| Prime factorization | 19 × 29 |
| Prime or composite? | Composite |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 551 interesting
- 551 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 2 different ways.
- 551 is a deficient number: its proper factors sum to 49, which is 502 less than 551 itself.
How to find the factors of 551 yourself
Divide 551 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √551 ≈ 23.47, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 19, 29, 551. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 551.
Frequently asked questions about 551
What are the factors of 551?
Is 551 a prime number?
What is the prime factorization of 551?
What two numbers multiply to give 551?
What is the sum of the factors of 551?
Is 551 a perfect square?
What is the largest factor of 551 other than itself?
How many factors does 551 have?
Explore more
Try another number in the factor calculator, break 551 down further with the prime factorization calculator, or compare 551 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.