56665543 has 8 divisors (see below), whose sum is σ = 65070720. Its totient is φ = 48802680.

The previous prime is 56665541. The next prime is 56665549. The reversal of 56665543 is 34556665.

It is a happy number.

56665543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56665543 - 2¹ = 56665541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56665496 and 56665505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56665541) 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 in 7 ways as a sum of consecutive naturals, for example, 135355 + ... + 135772.

It is an arithmetic number, because the mean of its divisors is an integer number (8133840).

Almost surely, 2^56665543 is an apocalyptic number.

56665543 is a deficient number, since it is larger than the sum of its proper divisors (8405177).

56665543 is a wasteful number, since it uses less digits than its factorization.

56665543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271157.

The product of its digits is 324000, while the sum is 40.

The square root of 56665543 is about 7527.6518915263. The cubic root of 56665543 is about 384.0959120048.

The spelling of 56665543 in words is "fifty-six million, six hundred sixty-five thousand, five hundred forty-three".