549863 has 2 divisors, whose sum is σ = 549864. Its totient is φ = 549862.

The previous prime is 549839. The next prime is 549877. The reversal of 549863 is 368945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549863 - 2⁸ = 549607 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 5 + 4⁷ + 8 + 9³ + 6⁴ + 3¹² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549833) 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, 274931 + 274932.

It is an arithmetic number, because the mean of its divisors is an integer number (274932).

2⁵⁴⁹⁸⁶³ is an apocalyptic number.

549863 is a deficient number, since it is larger than the sum of its proper divisors (1).

549863 is an equidigital number, since it uses as much as digits as its factorization.

549863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 549863 is about 741.5274775758. The cubic root of 549863 is about 81.9253236458.

The spelling of 549863 in words is "five hundred forty-nine thousand, eight hundred sixty-three".