52563636 has 18 divisors (see below), whose sum is σ = 132869282. Its totient is φ = 17521200.

The previous prime is 52563611. The next prime is 52563647. The reversal of 52563636 is 63636525.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 810000 = 7194^2 + 900^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1460101 = 52563636 / (5 + 2 + 5 + 6 + 3 + 6 + 3 + 6).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52563636.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 730015 + ... + 730086.

Almost surely, 2^52563636 is an apocalyptic number.

It is an amenable number.

52563636 is an abundant number, since it is smaller than the sum of its proper divisors (80305646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52563636 is a wasteful number, since it uses less digits than its factorization.

52563636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460111 (or 1460106 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 52563636 is about 7250.0783444043. The cubic root of 52563636 is about 374.5948477621.

The spelling of 52563636 in words is "fifty-two million, five hundred sixty-three thousand, six hundred thirty-six".