549495197 has 2 divisors, whose sum is σ = 549495198. Its totient is φ = 549495196.

The previous prime is 549495187. The next prime is 549495211. The reversal of 549495197 is 791594945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 524684836 + 24810361 = 22906^2 + 4981^2 .

It is a cyclic number.

It is not a de Polignac number, because 549495197 - 2⁸ = 549494941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549495187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274747598 + 274747599.

It is an arithmetic number, because the mean of its divisors is an integer number (274747599).

Almost surely, 2^549495197 is an apocalyptic number.

It is an amenable number.

549495197 is a deficient number, since it is larger than the sum of its proper divisors (1).

549495197 is an equidigital number, since it uses as much as digits as its factorization.

549495197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 549495197 is about 23441.3138923568. The cubic root of 549495197 is about 819.0705297304.

The spelling of 549495197 in words is "five hundred forty-nine million, four hundred ninety-five thousand, one hundred ninety-seven".