549250243 has 2 divisors, whose sum is σ = 549250244. Its totient is φ = 549250242.

The previous prime is 549250241. The next prime is 549250253. The reversal of 549250243 is 342052945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549250243 - 2¹ = 549250241 is a prime.

Together with 549250241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 549250199 and 549250208.

It is not a weakly prime, because it can be changed into another prime (549250241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274625121 + 274625122.

It is an arithmetic number, because the mean of its divisors is an integer number (274625122).

Almost surely, 2^549250243 is an apocalyptic number.

549250243 is a deficient number, since it is larger than the sum of its proper divisors (1).

549250243 is an equidigital number, since it uses as much as digits as its factorization.

549250243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 549250243 is about 23436.0884748287. The cubic root of 549250243 is about 818.9488032051.

The spelling of 549250243 in words is "five hundred forty-nine million, two hundred fifty thousand, two hundred forty-three".