551222303 has 2 divisors, whose sum is σ = 551222304. Its totient is φ = 551222302.

The previous prime is 551222279. The next prime is 551222363. The reversal of 551222303 is 303222155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551222303 - 2²⁰ = 550173727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551222363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275611151 + 275611152.

It is an arithmetic number, because the mean of its divisors is an integer number (275611152).

Almost surely, 2^551222303 is an apocalyptic number.

551222303 is a deficient number, since it is larger than the sum of its proper divisors (1).

551222303 is an equidigital number, since it uses as much as digits as its factorization.

551222303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 551222303 is about 23478.1239241980. The cubic root of 551222303 is about 819.9277662923.

Adding to 551222303 its reverse (303222155), we get a palindrome (854444458).

The spelling of 551222303 in words is "five hundred fifty-one million, two hundred twenty-two thousand, three hundred three".