56501506057 has 2 divisors, whose sum is σ = 56501506058. Its totient is φ = 56501506056.

The previous prime is 56501506043. The next prime is 56501506081. The reversal of 56501506057 is 75060510565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51139751881 + 5361754176 = 226141^2 + 73224^2 .

It is a cyclic number.

It is not a de Polignac number, because 56501506057 - 2¹⁵ = 56501473289 is a prime.

It is not a weakly prime, because it can be changed into another prime (56501506007) 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 as a sum of consecutive naturals, namely, 28250753028 + 28250753029.

It is an arithmetic number, because the mean of its divisors is an integer number (28250753029).

Almost surely, 2^56501506057 is an apocalyptic number.

It is an amenable number.

56501506057 is a deficient number, since it is larger than the sum of its proper divisors (1).

56501506057 is an equidigital number, since it uses as much as digits as its factorization.

56501506057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 40.

The spelling of 56501506057 in words is "fifty-six billion, five hundred one million, five hundred six thousand, fifty-seven".