56543761 has 4 divisors (see below), whose sum is σ = 57340224. Its totient is φ = 55747300.

The previous prime is 56543759. The next prime is 56543813. The reversal of 56543761 is 16734565.

56543761 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16734565 = 5 ⋅3346913.

It is a cyclic number.

It is not a de Polignac number, because 56543761 - 2¹ = 56543759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56543761.

It is not an unprimeable number, because it can be changed into a prime (56543161) 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, 398125 + ... + 398266.

It is an arithmetic number, because the mean of its divisors is an integer number (14335056).

Almost surely, 2^56543761 is an apocalyptic number.

It is an amenable number.

56543761 is a deficient number, since it is larger than the sum of its proper divisors (796463).

56543761 is an equidigital number, since it uses as much as digits as its factorization.

56543761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796462.

The product of its digits is 75600, while the sum is 37.

The square root of 56543761 is about 7519.5585641712. The cubic root of 56543761 is about 383.8205564403.

The spelling of 56543761 in words is "fifty-six million, five hundred forty-three thousand, seven hundred sixty-one".