56043636 has 24 divisors (see below), whose sum is σ = 142656864. Its totient is φ = 16982880.

The previous prime is 56043607. The next prime is 56043643. The reversal of 56043636 is 63634065.

It is a happy number.

56043636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56043636² = 6281778272200992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 56043597 and 56043606.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 212155 + ... + 212418.

It is an arithmetic number, because the mean of its divisors is an integer number (5944036).

Almost surely, 2^56043636 is an apocalyptic number.

It is an amenable number.

56043636 is an abundant number, since it is smaller than the sum of its proper divisors (86613228).

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

56043636 is a wasteful number, since it uses less digits than its factorization.

56043636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424591 (or 424589 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 56043636 is about 7486.2297586970. The cubic root of 56043636 is about 382.6855829752.

The spelling of 56043636 in words is "fifty-six million, forty-three thousand, six hundred thirty-six".