551498243 has 2 divisors, whose sum is σ = 551498244. Its totient is φ = 551498242.

The previous prime is 551498221. The next prime is 551498267. The reversal of 551498243 is 342894155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551498243 - 2⁶ = 551498179 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551498243.

It is not a weakly prime, because it can be changed into another prime (551498203) 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, 275749121 + 275749122.

It is an arithmetic number, because the mean of its divisors is an integer number (275749122).

Almost surely, 2^551498243 is an apocalyptic number.

551498243 is a deficient number, since it is larger than the sum of its proper divisors (1).

551498243 is an equidigital number, since it uses as much as digits as its factorization.

551498243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 551498243 is about 23483.9997232158. Note that the first 3 decimals coincide. The cubic root of 551498243 is about 820.0645611472.

The spelling of 551498243 in words is "five hundred fifty-one million, four hundred ninety-eight thousand, two hundred forty-three".