55506655571 has 2 divisors, whose sum is σ = 55506655572. Its totient is φ = 55506655570.

The previous prime is 55506655559. The next prime is 55506655639. The reversal of 55506655571 is 17555660555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55506655571 - 2¹⁰ = 55506654547 is a prime.

It is not a weakly prime, because it can be changed into another prime (55506655541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27753327785 + 27753327786.

It is an arithmetic number, because the mean of its divisors is an integer number (27753327786).

Almost surely, 2^55506655571 is an apocalyptic number.

55506655571 is a deficient number, since it is larger than the sum of its proper divisors (1).

55506655571 is an equidigital number, since it uses as much as digits as its factorization.

55506655571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3937500, while the sum is 50.

The spelling of 55506655571 in words is "fifty-five billion, five hundred six million, six hundred fifty-five thousand, five hundred seventy-one".