505243211 has 8 divisors (see below), whose sum is σ = 555515904. Its totient is φ = 455694120.

The previous prime is 505243201. The next prime is 505243217. The reversal of 505243211 is 112342505.

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 505243211 - 2¹⁰ = 505242187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505243217) 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, 179435 + ... + 182228.

It is an arithmetic number, because the mean of its divisors is an integer number (69439488).

Almost surely, 2^505243211 is an apocalyptic number.

505243211 is a deficient number, since it is larger than the sum of its proper divisors (50272693).

505243211 is a wasteful number, since it uses less digits than its factorization.

505243211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361801.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 505243211 is about 22477.6157765898. The cubic root of 505243211 is about 796.4652439396.

Adding to 505243211 its reverse (112342505), we get a palindrome (617585716).

It can be divided in two parts, 50524 and 3211, that added together give a palindrome (53735).

The spelling of 505243211 in words is "five hundred five million, two hundred forty-three thousand, two hundred eleven".