505542011 has 16 divisors (see below), whose sum is σ = 557257344. Its totient is φ = 455704704.

The previous prime is 505541941. The next prime is 505542043. The reversal of 505542011 is 110245505.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-505542011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505542061) 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, 461981 + ... + 463073.

It is an arithmetic number, because the mean of its divisors is an integer number (34828584).

Almost surely, 2^505542011 is an apocalyptic number.

505542011 is a deficient number, since it is larger than the sum of its proper divisors (51715333).

505542011 is a wasteful number, since it uses less digits than its factorization.

505542011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 505542011 is about 22484.2614065928. The cubic root of 505542011 is about 796.6222224077.

Adding to 505542011 its reverse (110245505), we get a palindrome (615787516).

The spelling of 505542011 in words is "five hundred five million, five hundred forty-two thousand, eleven".