56543636 has 6 divisors (see below), whose sum is σ = 98951370. Its totient is φ = 28271816.

The previous prime is 56543629. The next prime is 56543647. The reversal of 56543636 is 63634565.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38987536 + 17556100 = 6244^2 + 4190^2 .

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 56543636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7067951 + ... + 7067958.

It is an arithmetic number, because the mean of its divisors is an integer number (16491895).

Almost surely, 2^56543636 is an apocalyptic number.

It is an amenable number.

56543636 is a deficient number, since it is larger than the sum of its proper divisors (42407734).

56543636 is a wasteful number, since it uses less digits than its factorization.

56543636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135913 (or 14135911 counting only the distinct ones).

The product of its digits is 194400, while the sum is 38.

The square root of 56543636 is about 7519.5502525085. The cubic root of 56543636 is about 383.8202736057.

The spelling of 56543636 in words is "fifty-six million, five hundred forty-three thousand, six hundred thirty-six".