56555730545 has 16 divisors (see below), whose sum is σ = 70457011920. Its totient is φ = 43528934400.

The previous prime is 56555730541. The next prime is 56555730557. The reversal of 56555730545 is 54503755565.

It can be written as a sum of positive squares in 8 ways, for example, as 4407897664 + 52147832881 = 66392^2 + 228359^2 .

It is not a de Polignac number, because 56555730545 - 2² = 56555730541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56555730493 and 56555730502.

It is not an unprimeable number, because it can be changed into a prime (56555730541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653276 + ... + 734765.

It is an arithmetic number, because the mean of its divisors is an integer number (4403563245).

Almost surely, 2^56555730545 is an apocalyptic number.

It is an amenable number.

56555730545 is a deficient number, since it is larger than the sum of its proper divisors (13901281375).

56555730545 is a wasteful number, since it uses less digits than its factorization.

56555730545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388356.

The product of its (nonzero) digits is 7875000, while the sum is 50.

The spelling of 56555730545 in words is "fifty-six billion, five hundred fifty-five million, seven hundred thirty thousand, five hundred forty-five".