56110561 has 4 divisors (see below), whose sum is σ = 60426772. Its totient is φ = 51794352.

The previous prime is 56110559. The next prime is 56110577. The reversal of 56110561 is 16501165.

56110561 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: 16501165 = 5 ⋅3300233.

It can be written as a sum of positive squares in 2 ways, for example, as 19580625 + 36529936 = 4425^2 + 6044^2 .

It is a cyclic number.

It is not a de Polignac number, because 56110561 - 2¹ = 56110559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56110511) 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, 2158086 + ... + 2158111.

It is an arithmetic number, because the mean of its divisors is an integer number (15106693).

Almost surely, 2^56110561 is an apocalyptic number.

It is an amenable number.

56110561 is a deficient number, since it is larger than the sum of its proper divisors (4316211).

56110561 is a wasteful number, since it uses less digits than its factorization.

56110561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316210.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 56110561 is about 7490.6982985567. The cubic root of 56110561 is about 382.8378514967.

The spelling of 56110561 in words is "fifty-six million, one hundred ten thousand, five hundred sixty-one".