505213011 has 16 divisors (see below), whose sum is σ = 764390400. Its totient is φ = 329641704.

The previous prime is 505212997. The next prime is 505213057. The reversal of 505213011 is 110312505.

It is not a de Polignac number, because 505213011 - 2¹¹ = 505210963 is a prime.

It is a super-2 number, since 2×505213011² = 510480372967372242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505213061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197791 + ... + 200328.

It is an arithmetic number, because the mean of its divisors is an integer number (47774400).

Almost surely, 2^505213011 is an apocalyptic number.

505213011 is a deficient number, since it is larger than the sum of its proper divisors (259177389).

505213011 is a wasteful number, since it uses less digits than its factorization.

505213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398175 (or 398169 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 505213011 is about 22476.9439871171. The cubic root of 505213011 is about 796.4493745331.

Adding to 505213011 its reverse (110312505), we get a palindrome (615525516).

The spelling of 505213011 in words is "five hundred five million, two hundred thirteen thousand, eleven".