549504973 has 2 divisors, whose sum is σ = 549504974. Its totient is φ = 549504972.

The previous prime is 549504953. The next prime is 549505009. The reversal of 549504973 is 379405945.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371602729 + 177902244 = 19277^2 + 13338^2 .

It is a cyclic number.

It is not a de Polignac number, because 549504973 - 2⁵ = 549504941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549504953) 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, 274752486 + 274752487.

It is an arithmetic number, because the mean of its divisors is an integer number (274752487).

Almost surely, 2^549504973 is an apocalyptic number.

It is an amenable number.

549504973 is a deficient number, since it is larger than the sum of its proper divisors (1).

549504973 is an equidigital number, since it uses as much as digits as its factorization.

549504973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 549504973 is about 23441.5224121643. The cubic root of 549504973 is about 819.0753870285.

The spelling of 549504973 in words is "five hundred forty-nine million, five hundred four thousand, nine hundred seventy-three".