508579987 has 2 divisors, whose sum is σ = 508579988. Its totient is φ = 508579986.

The previous prime is 508579937. The next prime is 508580027. The reversal of 508579987 is 789975805.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-508579987 is a prime.

It is not a weakly prime, because it can be changed into another prime (508579937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254289993 + 254289994.

It is an arithmetic number, because the mean of its divisors is an integer number (254289994).

Almost surely, 2^508579987 is an apocalyptic number.

508579987 is a deficient number, since it is larger than the sum of its proper divisors (1).

508579987 is an equidigital number, since it uses as much as digits as its factorization.

508579987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6350400, while the sum is 58.

The square root of 508579987 is about 22551.7180498515. The cubic root of 508579987 is about 798.2147623507.

The spelling of 508579987 in words is "five hundred eight million, five hundred seventy-nine thousand, nine hundred eighty-seven".