55055661071 has 4 divisors (see below), whose sum is σ = 55056133200. Its totient is φ = 55055188944.

The previous prime is 55055661047. The next prime is 55055661097. The reversal of 55055661071 is 17016655055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17016655055 = 5 ⋅3403331011.

It is a cyclic number.

It is not a de Polignac number, because 55055661071 - 2¹⁰ = 55055660047 is a prime.

It is a super-2 number, since 2×55055661071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055681071) 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 3 ways as a sum of consecutive naturals, for example, 79190 + ... + 341148.

It is an arithmetic number, because the mean of its divisors is an integer number (13764033300).

Almost surely, 2^55055661071 is an apocalyptic number.

55055661071 is a deficient number, since it is larger than the sum of its proper divisors (472129).

55055661071 is a wasteful number, since it uses less digits than its factorization.

55055661071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472128.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 55055661071 in words is "fifty-five billion, fifty-five million, six hundred sixty-one thousand, seventy-one".