549247 has 2 divisors, whose sum is σ = 549248. Its totient is φ = 549246.

The previous prime is 549229. The next prime is 549257. The reversal of 549247 is 742945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549257) 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, 274623 + 274624.

It is an arithmetic number, because the mean of its divisors is an integer number (274624).

2⁵⁴⁹²⁴⁷ is an apocalyptic number.

549247 is a deficient number, since it is larger than the sum of its proper divisors (1).

549247 is an equidigital number, since it uses as much as digits as its factorization.

549247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 549247 is about 741.1120023316. The cubic root of 549247 is about 81.8947191398.

The spelling of 549247 in words is "five hundred forty-nine thousand, two hundred forty-seven".