56551520611 has 2 divisors, whose sum is σ = 56551520612. Its totient is φ = 56551520610.

The previous prime is 56551520587. The next prime is 56551520639. The reversal of 56551520611 is 11602515565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56551520611 - 2⁹ = 56551520099 is a prime.

It is not a weakly prime, because it can be changed into another prime (56551520651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28275760305 + 28275760306.

It is an arithmetic number, because the mean of its divisors is an integer number (28275760306).

Almost surely, 2^56551520611 is an apocalyptic number.

56551520611 is a deficient number, since it is larger than the sum of its proper divisors (1).

56551520611 is an equidigital number, since it uses as much as digits as its factorization.

56551520611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 56551520611 in words is "fifty-six billion, five hundred fifty-one million, five hundred twenty thousand, six hundred eleven".