549973169 has 2 divisors, whose sum is σ = 549973170. Its totient is φ = 549973168.

The previous prime is 549973163. The next prime is 549973199. The reversal of 549973169 is 961379945.

It is a happy number.

549973169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522808225 + 27164944 = 22865^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 549973169 - 2⁴ = 549973153 is a prime.

It is a super-2 number, since 2×549973169² = 604940973239805122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 549973169.

It is not a weakly prime, because it can be changed into another prime (549973163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274986584 + 274986585.

It is an arithmetic number, because the mean of its divisors is an integer number (274986585).

Almost surely, 2^549973169 is an apocalyptic number.

It is an amenable number.

549973169 is a deficient number, since it is larger than the sum of its proper divisors (1).

549973169 is an equidigital number, since it uses as much as digits as its factorization.

549973169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 549973169 is about 23451.5067532984. The cubic root of 549973169 is about 819.3079472270.

The spelling of 549973169 in words is "five hundred forty-nine million, nine hundred seventy-three thousand, one hundred sixty-nine".