505501011 has 12 divisors (see below), whose sum is σ = 732339192. Its totient is φ = 335998656.

The previous prime is 505500971. The next prime is 505501033. The reversal of 505501011 is 110105505.

It is not a de Polignac number, because 505501011 - 2¹⁹ = 504976723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505501081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80301 + ... + 86366.

It is an arithmetic number, because the mean of its divisors is an integer number (61028266).

Almost surely, 2^505501011 is an apocalyptic number.

505501011 is a deficient number, since it is larger than the sum of its proper divisors (226838181).

505501011 is a wasteful number, since it uses less digits than its factorization.

505501011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167010 (or 167007 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 505501011 is about 22483.3496392330. The cubic root of 505501011 is about 796.6006861863.

Adding to 505501011 its reverse (110105505), we get a palindrome (615606516).

The spelling of 505501011 in words is "five hundred five million, five hundred one thousand, eleven".