551422213 has 2 divisors, whose sum is σ = 551422214. Its totient is φ = 551422212.

The previous prime is 551422169. The next prime is 551422241. The reversal of 551422213 is 312224155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359405764 + 192016449 = 18958^2 + 13857^2 .

It is a cyclic number.

It is not a de Polignac number, because 551422213 - 2¹³ = 551414021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551422273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275711106 + 275711107.

It is an arithmetic number, because the mean of its divisors is an integer number (275711107).

Almost surely, 2^551422213 is an apocalyptic number.

It is an amenable number.

551422213 is a deficient number, since it is larger than the sum of its proper divisors (1).

551422213 is an equidigital number, since it uses as much as digits as its factorization.

551422213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 551422213 is about 23482.3809056918. The cubic root of 551422213 is about 820.0268744910.

Adding to 551422213 its reverse (312224155), we get a palindrome (863646368).

The spelling of 551422213 in words is "five hundred fifty-one million, four hundred twenty-two thousand, two hundred thirteen".