505544011 has 32 divisors (see below), whose sum is σ = 626296320. Its totient is φ = 398255616.

The previous prime is 505543993. The next prime is 505544021. The reversal of 505544011 is 110445505.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 505544011 - 2¹⁵ = 505511243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505544021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1299405 + ... + 1299793.

It is an arithmetic number, because the mean of its divisors is an integer number (19571760).

Almost surely, 2^505544011 is an apocalyptic number.

505544011 is a deficient number, since it is larger than the sum of its proper divisors (120752309).

505544011 is a wasteful number, since it uses less digits than its factorization.

505544011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 505544011 is about 22484.3058821036. The cubic root of 505544011 is about 796.6232729253.

Adding to 505544011 its reverse (110445505), we get a palindrome (615989516).

The spelling of 505544011 in words is "five hundred five million, five hundred forty-four thousand, eleven".