551898211 has 2 divisors, whose sum is σ = 551898212. Its totient is φ = 551898210.

The previous prime is 551898209. The next prime is 551898223. The reversal of 551898211 is 112898155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551898211 - 2¹ = 551898209 is a prime.

Together with 551898209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (551898241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275949105 + 275949106.

It is an arithmetic number, because the mean of its divisors is an integer number (275949106).

Almost surely, 2^551898211 is an apocalyptic number.

551898211 is a deficient number, since it is larger than the sum of its proper divisors (1).

551898211 is an equidigital number, since it uses as much as digits as its factorization.

551898211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 40.

The square root of 551898211 is about 23492.5139352944. The cubic root of 551898211 is about 820.2627608246.

The spelling of 551898211 in words is "five hundred fifty-one million, eight hundred ninety-eight thousand, two hundred eleven".