56581908041 has 4 divisors (see below), whose sum is σ = 56584372932. Its totient is φ = 56579443152.

The previous prime is 56581908029. The next prime is 56581908049. The reversal of 56581908041 is 14080918565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27342276025 + 29239632016 = 165355^2 + 170996^2 .

It is a cyclic number.

It is not a de Polignac number, because 56581908041 - 2³⁴ = 39402038857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56581908049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197686 + ... + 1244031.

It is an arithmetic number, because the mean of its divisors is an integer number (14146093233).

Almost surely, 2^56581908041 is an apocalyptic number.

It is an amenable number.

56581908041 is a deficient number, since it is larger than the sum of its proper divisors (2464891).

56581908041 is a wasteful number, since it uses less digits than its factorization.

56581908041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464890.

The product of its (nonzero) digits is 345600, while the sum is 47.

The spelling of 56581908041 in words is "fifty-six billion, five hundred eighty-one million, nine hundred eight thousand, forty-one".