505244013 has 16 divisors (see below), whose sum is σ = 703512960. Its totient is φ = 321925824.

The previous prime is 505244009. The next prime is 505244021. The reversal of 505244013 is 310442505.

It is not a de Polignac number, because 505244013 - 2² = 505244009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505244053) 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 15 ways as a sum of consecutive naturals, for example, 121395 + ... + 125487.

It is an arithmetic number, because the mean of its divisors is an integer number (43969560).

Almost surely, 2^505244013 is an apocalyptic number.

It is an amenable number.

505244013 is a deficient number, since it is larger than the sum of its proper divisors (198268947).

505244013 is a wasteful number, since it uses less digits than its factorization.

505244013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 505244013 is about 22477.6336165531. The cubic root of 505244013 is about 796.4656653636.

Adding to 505244013 its reverse (310442505), we get a palindrome (815686518).

The spelling of 505244013 in words is "five hundred five million, two hundred forty-four thousand, thirteen".