505043513 has 8 divisors (see below), whose sum is σ = 547864968. Its totient is φ = 462789504.

The previous prime is 505043491. The next prime is 505043527. The reversal of 505043513 is 315340505.

It can be written as a sum of positive squares in 4 ways, for example, as 906304 + 504137209 = 952^2 + 22453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505043513 - 2¹⁸ = 504781369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505043563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140006 + ... + 143567.

It is an arithmetic number, because the mean of its divisors is an integer number (68483121).

Almost surely, 2^505043513 is an apocalyptic number.

It is an amenable number.

505043513 is a deficient number, since it is larger than the sum of its proper divisors (42821455).

505043513 is a wasteful number, since it uses less digits than its factorization.

505043513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283723.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 505043513 is about 22473.1731849332. The cubic root of 505043513 is about 796.3602954893.

The spelling of 505043513 in words is "five hundred five million, forty-three thousand, five hundred thirteen".