56565316504573 has 2 divisors, whose sum is σ = 56565316504574. Its totient is φ = 56565316504572.

The previous prime is 56565316504561. The next prime is 56565316504577. The reversal of 56565316504573 is 37540561356565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44544651975684 + 12020664528889 = 6674178^2 + 3467083^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565316504573 - 2²¹ = 56565314407421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56565316504577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282658252286 + 28282658252287.

It is an arithmetic number, because the mean of its divisors is an integer number (28282658252287).

Almost surely, 2^{56565316504573} is an apocalyptic number.

It is an amenable number.

56565316504573 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565316504573 is an equidigital number, since it uses as much as digits as its factorization.

56565316504573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100000, while the sum is 61.

The spelling of 56565316504573 in words is "fifty-six trillion, five hundred sixty-five billion, three hundred sixteen million, five hundred four thousand, five hundred seventy-three".