505105011 has 16 divisors (see below), whose sum is σ = 753692800. Its totient is φ = 334311624.

The previous prime is 505104997. The next prime is 505105033. The reversal of 505105011 is 110501505.

It is not a de Polignac number, because 505105011 - 2⁹ = 505104499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505105061) 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, 63541 + ... + 71046.

It is an arithmetic number, because the mean of its divisors is an integer number (47105800).

Almost surely, 2^505105011 is an apocalyptic number.

505105011 is a deficient number, since it is larger than the sum of its proper divisors (248587789).

505105011 is a wasteful number, since it uses less digits than its factorization.

505105011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134735 (or 134729 counting only the distinct ones).

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

The square root of 505105011 is about 22474.5413968784. The cubic root of 505105011 is about 796.3926178381.

Adding to 505105011 its reverse (110501505), we get a palindrome (615606516).

The spelling of 505105011 in words is "five hundred five million, one hundred five thousand, eleven".