551003 has 2 divisors, whose sum is σ = 551004. Its totient is φ = 551002.

The previous prime is 550997. The next prime is 551017. The reversal of 551003 is 300155.

It is an a-pointer prime, because the next prime (551017) can be obtained adding 551003 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551003 - 2⁶ = 550939 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (551063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275501 + 275502.

It is an arithmetic number, because the mean of its divisors is an integer number (275502).

2⁵⁵¹⁰⁰³ is an apocalyptic number.

551003 is a deficient number, since it is larger than the sum of its proper divisors (1).

551003 is an equidigital number, since it uses as much as digits as its factorization.

551003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 551003 is about 742.2957631564. The cubic root of 551003 is about 81.9819016175.

Adding to 551003 its reverse (300155), we get a palindrome (851158).

The spelling of 551003 in words is "five hundred fifty-one thousand, three".