549357247 has 2 divisors, whose sum is σ = 549357248. Its totient is φ = 549357246.

The previous prime is 549357239. The next prime is 549357253. The reversal of 549357247 is 742753945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549357247 - 2³ = 549357239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 549357197 and 549357206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549357257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274678623 + 274678624.

It is an arithmetic number, because the mean of its divisors is an integer number (274678624).

Almost surely, 2^549357247 is an apocalyptic number.

549357247 is a deficient number, since it is larger than the sum of its proper divisors (1).

549357247 is an equidigital number, since it uses as much as digits as its factorization.

549357247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 46.

The square root of 549357247 is about 23438.3712531396. The cubic root of 549357247 is about 819.0019818238.

The spelling of 549357247 in words is "five hundred forty-nine million, three hundred fifty-seven thousand, two hundred forty-seven".