505823089 has 2 divisors, whose sum is σ = 505823090. Its totient is φ = 505823088.

The previous prime is 505823081. The next prime is 505823113. The reversal of 505823089 is 980328505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387774864 + 118048225 = 19692^2 + 10865^2 .

It is a cyclic number.

It is not a de Polignac number, because 505823089 - 2³ = 505823081 is a prime.

It is not a weakly prime, because it can be changed into another prime (505823081) 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, 252911544 + 252911545.

It is an arithmetic number, because the mean of its divisors is an integer number (252911545).

Almost surely, 2^505823089 is an apocalyptic number.

It is an amenable number.

505823089 is a deficient number, since it is larger than the sum of its proper divisors (1).

505823089 is an equidigital number, since it uses as much as digits as its factorization.

505823089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 505823089 is about 22490.5110880122. The cubic root of 505823089 is about 796.7698339421.

The spelling of 505823089 in words is "five hundred five million, eight hundred twenty-three thousand, eighty-nine".