56665043 has 4 divisors (see below), whose sum is σ = 58619040. Its totient is φ = 54711048.

The previous prime is 56665027. The next prime is 56665057. The reversal of 56665043 is 34056665.

56665043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34056665 = 5 ⋅6811333.

It is a cyclic number.

It is not a de Polignac number, because 56665043 - 2⁴ = 56665027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56664994 and 56665012.

It is not an unprimeable number, because it can be changed into a prime (56665073) 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 3 ways as a sum of consecutive naturals, for example, 976955 + ... + 977012.

It is an arithmetic number, because the mean of its divisors is an integer number (14654760).

Almost surely, 2^56665043 is an apocalyptic number.

56665043 is a deficient number, since it is larger than the sum of its proper divisors (1953997).

56665043 is a wasteful number, since it uses less digits than its factorization.

56665043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953996.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 56665043 is about 7527.6186805656. The cubic root of 56665043 is about 384.0947822852.

The spelling of 56665043 in words is "fifty-six million, six hundred sixty-five thousand, forty-three".