505212529 has 2 divisors, whose sum is σ = 505212530. Its totient is φ = 505212528.

The previous prime is 505212517. The next prime is 505212551. The reversal of 505212529 is 925212505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321664225 + 183548304 = 17935^2 + 13548^2 .

It is a cyclic number.

It is not a de Polignac number, because 505212529 - 2⁵ = 505212497 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 505212529.

It is not a weakly prime, because it can be changed into another prime (505212559) 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, 252606264 + 252606265.

It is an arithmetic number, because the mean of its divisors is an integer number (252606265).

Almost surely, 2^505212529 is an apocalyptic number.

It is an amenable number.

505212529 is a deficient number, since it is larger than the sum of its proper divisors (1).

505212529 is an equidigital number, since it uses as much as digits as its factorization.

505212529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 505212529 is about 22476.9332650164. The cubic root of 505212529 is about 796.4491212481.

The spelling of 505212529 in words is "five hundred five million, two hundred twelve thousand, five hundred twenty-nine".