549775117 has 2 divisors, whose sum is σ = 549775118. Its totient is φ = 549775116.

The previous prime is 549775097. The next prime is 549775123. The reversal of 549775117 is 711577945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414773956 + 135001161 = 20366^2 + 11619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549775117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549775147) 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, 274887558 + 274887559.

It is an arithmetic number, because the mean of its divisors is an integer number (274887559).

Almost surely, 2^549775117 is an apocalyptic number.

It is an amenable number.

549775117 is a deficient number, since it is larger than the sum of its proper divisors (1).

549775117 is an equidigital number, since it uses as much as digits as its factorization.

549775117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308700, while the sum is 46.

The square root of 549775117 is about 23447.2837872535. The cubic root of 549775117 is about 819.2095878472.

The spelling of 549775117 in words is "five hundred forty-nine million, seven hundred seventy-five thousand, one hundred seventeen".