56566541 has 4 divisors (see below), whose sum is σ = 56610684. Its totient is φ = 56522400.

The previous prime is 56566507. The next prime is 56566561. The reversal of 56566541 is 14566565.

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 26481316 + 30085225 = 5146^2 + 5485^2 .

It is a cyclic number.

It is not a de Polignac number, because 56566541 - 2¹⁰ = 56565517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56566495 and 56566504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56566561) 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, 20090 + ... + 22731.

It is an arithmetic number, because the mean of its divisors is an integer number (14152671).

Almost surely, 2^56566541 is an apocalyptic number.

It is an amenable number.

56566541 is a deficient number, since it is larger than the sum of its proper divisors (44143).

56566541 is a wasteful number, since it uses less digits than its factorization.

56566541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44142.

The product of its digits is 108000, while the sum is 38.

The square root of 56566541 is about 7521.0731282178. The cubic root of 56566541 is about 383.8720932690.

The spelling of 56566541 in words is "fifty-six million, five hundred sixty-six thousand, five hundred forty-one".