543394549 has 2 divisors, whose sum is σ = 543394550. Its totient is φ = 543394548.

The previous prime is 543394529. The next prime is 543394583. The reversal of 543394549 is 945493345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298252900 + 245141649 = 17270^2 + 15657^2 .

It is a cyclic number.

It is not a de Polignac number, because 543394549 - 2⁵ = 543394517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543394499 and 543394508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543394529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271697274 + 271697275.

It is an arithmetic number, because the mean of its divisors is an integer number (271697275).

Almost surely, 2^543394549 is an apocalyptic number.

It is an amenable number.

543394549 is a deficient number, since it is larger than the sum of its proper divisors (1).

543394549 is an equidigital number, since it uses as much as digits as its factorization.

543394549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The square root of 543394549 is about 23310.8247172853. The cubic root of 543394549 is about 816.0280596568.

The spelling of 543394549 in words is "five hundred forty-three million, three hundred ninety-four thousand, five hundred forty-nine".