551242207 has 2 divisors, whose sum is σ = 551242208. Its totient is φ = 551242206.

The previous prime is 551242151. The next prime is 551242271. The reversal of 551242207 is 702242155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551242207 - 2¹¹ = 551240159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551242277) 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, 275621103 + 275621104.

It is an arithmetic number, because the mean of its divisors is an integer number (275621104).

Almost surely, 2^551242207 is an apocalyptic number.

551242207 is a deficient number, since it is larger than the sum of its proper divisors (1).

551242207 is an equidigital number, since it uses as much as digits as its factorization.

551242207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 551242207 is about 23478.5478043255. The cubic root of 551242207 is about 819.9376350547.

The spelling of 551242207 in words is "five hundred fifty-one million, two hundred forty-two thousand, two hundred seven".