56044561 has 4 divisors (see below), whose sum is σ = 56368692. Its totient is φ = 55720432.

The previous prime is 56044519. The next prime is 56044577. The reversal of 56044561 is 16544065.

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 54302161 + 1742400 = 7369^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 56044561 - 2¹⁵ = 56011793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56044591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161806 + ... + 162151.

It is an arithmetic number, because the mean of its divisors is an integer number (14092173).

Almost surely, 2^56044561 is an apocalyptic number.

It is an amenable number.

56044561 is a deficient number, since it is larger than the sum of its proper divisors (324131).

56044561 is a wasteful number, since it uses less digits than its factorization.

56044561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324130.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 56044561 is about 7486.2915385390. The cubic root of 56044561 is about 382.6876883717.

The spelling of 56044561 in words is "fifty-six million, forty-four thousand, five hundred sixty-one".