549013 has 2 divisors, whose sum is σ = 549014. Its totient is φ = 549012.

The previous prime is 549011. The next prime is 549019. The reversal of 549013 is 310945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515524 + 33489 = 718^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 549013 - 2¹ = 549011 is a prime.

Together with 549011, it forms a pair of twin primes.

549013 is a lucky number.

It is equal to p₄₅₂₄₇ and since 549013 and 45247 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274506 + 274507.

It is an arithmetic number, because the mean of its divisors is an integer number (274507).

2⁵⁴⁹⁰¹³ is an apocalyptic number.

It is an amenable number.

549013 is a deficient number, since it is larger than the sum of its proper divisors (1).

549013 is an equidigital number, since it uses as much as digits as its factorization.

549013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 549013 is about 740.9541146387. The cubic root of 549013 is about 81.8830874050.

Adding to 549013 its reverse (310945), we get a palindrome (859958).

The spelling of 549013 in words is "five hundred forty-nine thousand, thirteen".