# Is 551 a Prime Number?

Is 551 a prime number? Numbers having only 2 factors, i.e. 1 and the number itself are known as prime numbers whereas numbers with more than 2 factors are known as composite. The answer to the question whether 551 is a prime or composite is - * "551 is a composite number."* Now, let us find out how and why is 551 a prime number or a composite number?

**Is 551 a prime number? -**No**Is 551 a composite number? -**Yes**Factors of 551 -**1, 19, 29, 551**Prime Factors of 551 -**19, 29**Is 551 a perfect square? -**No

## Is 551 a Prime Number?

No, 551 is not a prime number. The number 551 is divisible by 1, 19, 29, 551. For a number to be classified as a prime number, it should have exactly two factors. Since 551 has more than two factors, i.e. 1, 19, 29, 551, it is not a prime number.

## Why is 551 not a Prime Number?

To understand whether 551 is prime or composite, it is important to find its factors.

**Factors of 551:** 1, 19, 29, 551

Since 551 has more than 2 factors, we can say that 551 is not a prime number.

## Is 551 a Composite Number?

Yes, since 551 has more than two factors i.e. 1, 19, 29, 551. In other words, 551 is a composite number because 551 has more than 2 factors.

**Problem Statements: **

Is 551 a Prime Number? | No |

Is 551 a Composite Number? | Yes |

Is 551 a Perfect Square? | No |

Cube Root of 551 | 8.198158 |

Is 551 a Perfect Cube? | No |

Square of 551 | 303601 |

Is 551 an Even Number? | No |

Square Root of 551 | 23.473389 |

Multiples of 551 | 551, 1102, 1653, 2204, 2755, 3306, 3857, 4408, 4959, 5510 |

Is 551 an Odd Number? | Yes |

**Fun Facts: **

- All primes except 2 are odd.
- A perfect square (square number) is always a composite number.
- Euler discovered a polynomial n
^{2}+ n + 41 that produces prime numbers for values of n that lie between 0 and 39 inclusive. It can generate 40 prime numbers for 0 <= n <= 39.

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