508978081 has 2 divisors, whose sum is σ = 508978082. Its totient is φ = 508978080.

The previous prime is 508978069. The next prime is 508978111. The reversal of 508978081 is 180879805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388878400 + 120099681 = 19720^2 + 10959^2 .

It is a cyclic number.

It is not a de Polignac number, because 508978081 - 2⁵ = 508978049 is a prime.

It is a super-2 number, since 2×508978081² = 518117373876885122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (508978021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254489040 + 254489041.

It is an arithmetic number, because the mean of its divisors is an integer number (254489041).

Almost surely, 2^508978081 is an apocalyptic number.

It is an amenable number.

508978081 is a deficient number, since it is larger than the sum of its proper divisors (1).

508978081 is an equidigital number, since it uses as much as digits as its factorization.

508978081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 508978081 is about 22560.5425688302. The cubic root of 508978081 is about 798.4229771456.

The spelling of 508978081 in words is "five hundred eight million, nine hundred seventy-eight thousand, eighty-one".