505232089 has 2 divisors, whose sum is σ = 505232090. Its totient is φ = 505232088.

The previous prime is 505232087. The next prime is 505232137. The reversal of 505232089 is 980232505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276224400 + 229007689 = 16620^2 + 15133^2 .

It is a cyclic number.

It is not a de Polignac number, because 505232089 - 2¹ = 505232087 is a prime.

Together with 505232087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (505232087) 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, 252616044 + 252616045.

It is an arithmetic number, because the mean of its divisors is an integer number (252616045).

Almost surely, 2^505232089 is an apocalyptic number.

It is an amenable number.

505232089 is a deficient number, since it is larger than the sum of its proper divisors (1).

505232089 is an equidigital number, since it uses as much as digits as its factorization.

505232089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 505232089 is about 22477.3683735441. The cubic root of 505232089 is about 796.4593996576.

The spelling of 505232089 in words is "five hundred five million, two hundred thirty-two thousand, eighty-nine".