551233 has 2 divisors, whose sum is σ = 551234. Its totient is φ = 551232.

The previous prime is 551231. The next prime is 551269. The reversal of 551233 is 332155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 150544 = 633^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 551233 - 2¹ = 551231 is a prime.

Together with 551231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 551233.

It is not a weakly prime, because it can be changed into another prime (551231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275616 + 275617.

It is an arithmetic number, because the mean of its divisors is an integer number (275617).

2⁵⁵¹²³³ is an apocalyptic number.

It is an amenable number.

551233 is a deficient number, since it is larger than the sum of its proper divisors (1).

551233 is an equidigital number, since it uses as much as digits as its factorization.

551233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 19.

The square root of 551233 is about 742.4506717621. The cubic root of 551233 is about 81.9933070087.

Adding to 551233 its reverse (332155), we get a palindrome (883388).

It can be divided in two parts, 551 and 233, that added together give a square (784 = 28²).

The spelling of 551233 in words is "five hundred fifty-one thousand, two hundred thirty-three".