549549893 has 2 divisors, whose sum is σ = 549549894. Its totient is φ = 549549892.

The previous prime is 549549887. The next prime is 549549907. The reversal of 549549893 is 398945945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474934849 + 74615044 = 21793^2 + 8638^2 .

It is a cyclic number.

It is not a de Polignac number, because 549549893 - 2¹⁸ = 549287749 is a prime.

It is a super-2 number, since 2×549549893² = 604010169792622898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549542893) 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, 274774946 + 274774947.

It is an arithmetic number, because the mean of its divisors is an integer number (274774947).

Almost surely, 2^549549893 is an apocalyptic number.

It is an amenable number.

549549893 is a deficient number, since it is larger than the sum of its proper divisors (1).

549549893 is an equidigital number, since it uses as much as digits as its factorization.

549549893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 56.

The square root of 549549893 is about 23442.4805214807. The cubic root of 549549893 is about 819.0977052153.

The spelling of 549549893 in words is "five hundred forty-nine million, five hundred forty-nine thousand, eight hundred ninety-three".