505043144 has 8 divisors (see below), whose sum is σ = 946955910. Its totient is φ = 252521568.

The previous prime is 505043141. The next prime is 505043159. The reversal of 505043144 is 441340505.

It can be written as a sum of positive squares in only one way, i.e., 476548900 + 28494244 = 21830^2 + 5338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (505043141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31565189 + ... + 31565204.

Almost surely, 2^505043144 is an apocalyptic number.

It is an amenable number.

505043144 is a deficient number, since it is larger than the sum of its proper divisors (441912766).

505043144 is a wasteful number, since it uses less digits than its factorization.

505043144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63130399 (or 63130395 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 505043144 is about 22473.1649751431. The cubic root of 505043144 is about 796.3601015409.

Adding to 505043144 its reverse (441340505), we get a palindrome (946383649).

The spelling of 505043144 in words is "five hundred five million, forty-three thousand, one hundred forty-four".