505305029 has 4 divisors (see below), whose sum is σ = 513588780. Its totient is φ = 497021280.

The previous prime is 505305023. The next prime is 505305043. The reversal of 505305029 is 920503505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 216237025 + 289068004 = 14705^2 + 17002^2 .

It is a cyclic number.

It is not a de Polignac number, because 505305029 - 2⁴ = 505305013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505304992 and 505305010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505305023) 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 in 3 ways as a sum of consecutive naturals, for example, 4141784 + ... + 4141905.

It is an arithmetic number, because the mean of its divisors is an integer number (128397195).

Almost surely, 2^505305029 is an apocalyptic number.

It is an amenable number.

505305029 is a deficient number, since it is larger than the sum of its proper divisors (8283751).

505305029 is an equidigital number, since it uses as much as digits as its factorization.

505305029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8283750.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 505305029 is about 22478.9908358894. The cubic root of 505305029 is about 796.4977259070.

The spelling of 505305029 in words is "five hundred five million, three hundred five thousand, twenty-nine".