549067217 has 2 divisors, whose sum is σ = 549067218. Its totient is φ = 549067216.

The previous prime is 549067213. The next prime is 549067219. The reversal of 549067217 is 712760945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480442561 + 68624656 = 21919^2 + 8284^2 .

It is a cyclic number.

It is not a de Polignac number, because 549067217 - 2² = 549067213 is a prime.

Together with 549067219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549067213) 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, 274533608 + 274533609.

It is an arithmetic number, because the mean of its divisors is an integer number (274533609).

Almost surely, 2^549067217 is an apocalyptic number.

It is an amenable number.

549067217 is a deficient number, since it is larger than the sum of its proper divisors (1).

549067217 is an equidigital number, since it uses as much as digits as its factorization.

549067217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 549067217 is about 23432.1833596445. The cubic root of 549067217 is about 818.8578273232.

The spelling of 549067217 in words is "five hundred forty-nine million, sixty-seven thousand, two hundred seventeen".