505011213 has 64 divisors (see below), whose sum is σ = 875520000. Its totient is φ = 281765952.

The previous prime is 505011179. The next prime is 505011229. The reversal of 505011213 is 312110505.

It is not a de Polignac number, because 505011213 - 2¹³ = 505003021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505011313) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2224606 + ... + 2224832.

It is an arithmetic number, because the mean of its divisors is an integer number (13680000).

Almost surely, 2^505011213 is an apocalyptic number.

It is an amenable number.

505011213 is a deficient number, since it is larger than the sum of its proper divisors (370508787).

505011213 is a wasteful number, since it uses less digits than its factorization.

505011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

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

The square root of 505011213 is about 22472.4545388349. The cubic root of 505011213 is about 796.3433180835.

Adding to 505011213 its reverse (312110505), we get a palindrome (817121718).

The spelling of 505011213 in words is "five hundred five million, eleven thousand, two hundred thirteen".