508342091 has 2 divisors, whose sum is σ = 508342092. Its totient is φ = 508342090.

The previous prime is 508342063. The next prime is 508342129. The reversal of 508342091 is 190243805.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-508342091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (508342031) 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, 254171045 + 254171046.

It is an arithmetic number, because the mean of its divisors is an integer number (254171046).

Almost surely, 2^508342091 is an apocalyptic number.

508342091 is a deficient number, since it is larger than the sum of its proper divisors (1).

508342091 is an equidigital number, since it uses as much as digits as its factorization.

508342091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 508342091 is about 22546.4429788825. The cubic root of 508342091 is about 798.0902839206.

Adding to 508342091 its reverse (190243805), we get a palindrome (698585896).

It can be divided in two parts, 50834 and 2091, that added together give a palindrome (52925).

The spelling of 508342091 in words is "five hundred eight million, three hundred forty-two thousand, ninety-one".