56500611121 has 2 divisors, whose sum is σ = 56500611122. Its totient is φ = 56500611120.

The previous prime is 56500611113. The next prime is 56500611133. The reversal of 56500611121 is 12111600565.

It is a happy number.

56500611121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48901130496 + 7599480625 = 221136^2 + 87175^2 .

It is a cyclic number.

It is not a de Polignac number, because 56500611121 - 2³ = 56500611113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56500611121.

It is not a weakly prime, because it can be changed into another prime (56500611221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28250305560 + 28250305561.

It is an arithmetic number, because the mean of its divisors is an integer number (28250305561).

Almost surely, 2^56500611121 is an apocalyptic number.

It is an amenable number.

56500611121 is a deficient number, since it is larger than the sum of its proper divisors (1).

56500611121 is an equidigital number, since it uses as much as digits as its factorization.

56500611121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 56500611121 in words is "fifty-six billion, five hundred million, six hundred eleven thousand, one hundred twenty-one".