505050289 has 2 divisors, whose sum is σ = 505050290. Its totient is φ = 505050288.

The previous prime is 505050199. The next prime is 505050311. The reversal of 505050289 is 982050505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399680064 + 105370225 = 19992^2 + 10265^2 .

It is a cyclic number.

It is not a de Polignac number, because 505050289 - 2⁹ = 505049777 is a prime.

It is not a weakly prime, because it can be changed into another prime (505051289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252525144 + 252525145.

It is an arithmetic number, because the mean of its divisors is an integer number (252525145).

Almost surely, 2^505050289 is an apocalyptic number.

It is an amenable number.

505050289 is a deficient number, since it is larger than the sum of its proper divisors (1).

505050289 is an equidigital number, since it uses as much as digits as its factorization.

505050289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 505050289 is about 22473.3239419539. The cubic root of 505050289 is about 796.3638569733.

The spelling of 505050289 in words is "five hundred five million, fifty thousand, two hundred eighty-nine".