503501864 has 8 divisors (see below), whose sum is σ = 944066010. Its totient is φ = 251750928.

The previous prime is 503501863. The next prime is 503501891. The reversal of 503501864 is 468105305.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 443439364 + 60062500 = 21058^2 + 7750^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 503501864.

It is not an unprimeable number, because it can be changed into a prime (503501861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31468859 + ... + 31468874.

Almost surely, 2^503501864 is an apocalyptic number.

It is an amenable number.

503501864 is a deficient number, since it is larger than the sum of its proper divisors (440564146).

503501864 is a wasteful number, since it uses less digits than its factorization.

503501864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62937739 (or 62937735 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 503501864 is about 22438.8472074659. The cubic root of 503501864 is about 795.5491710744.

The spelling of 503501864 in words is "five hundred three million, five hundred one thousand, eight hundred sixty-four".