55050565661 has 16 divisors (see below), whose sum is σ = 67993989504. Its totient is φ = 43402561344.

The previous prime is 55050565651. The next prime is 55050565693. The reversal of 55050565661 is 16656505055.

It is a cyclic number.

It is not a de Polignac number, because 55050565661 - 2¹⁰ = 55050564637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55050565651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043066 + ... + 1094571.

It is an arithmetic number, because the mean of its divisors is an integer number (4249624344).

Almost surely, 2^55050565661 is an apocalyptic number.

It is an amenable number.

55050565661 is a deficient number, since it is larger than the sum of its proper divisors (12943423843).

55050565661 is a wasteful number, since it uses less digits than its factorization.

55050565661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137940.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 55050565661 in words is "fifty-five billion, fifty million, five hundred sixty-five thousand, six hundred sixty-one".