505130511 has 4 divisors (see below), whose sum is σ = 673507352. Its totient is φ = 336753672.

The previous prime is 505130491. The next prime is 505130513. The reversal of 505130511 is 115031505.

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

It is not a de Polignac number, because 505130511 - 2⁷ = 505130383 is a prime.

It is a super-2 number, since 2×505130511² = 510313666286242242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505130513) 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, 84188416 + ... + 84188421.

It is an arithmetic number, because the mean of its divisors is an integer number (168376838).

Almost surely, 2^505130511 is an apocalyptic number.

505130511 is a deficient number, since it is larger than the sum of its proper divisors (168376841).

505130511 is a wasteful number, since it uses less digits than its factorization.

505130511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168376840.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 505130511 is about 22475.1086982911. The cubic root of 505130511 is about 796.4060194539.

The spelling of 505130511 in words is "five hundred five million, one hundred thirty thousand, five hundred eleven".