542563799 has 2 divisors, whose sum is σ = 542563800. Its totient is φ = 542563798.

The previous prime is 542563793. The next prime is 542563831. The reversal of 542563799 is 997365245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542563799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542563793) 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, 271281899 + 271281900.

It is an arithmetic number, because the mean of its divisors is an integer number (271281900).

Almost surely, 2^542563799 is an apocalyptic number.

542563799 is a deficient number, since it is larger than the sum of its proper divisors (1).

542563799 is an equidigital number, since it uses as much as digits as its factorization.

542563799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 50.

The square root of 542563799 is about 23292.9989267162. The cubic root of 542563799 is about 815.6119954455.

Adding to 542563799 its sum of digits (50), we get a square (542563849 = 23293²).

The spelling of 542563799 in words is "five hundred forty-two million, five hundred sixty-three thousand, seven hundred ninety-nine".