55505327571 has 16 divisors (see below), whose sum is σ = 82407736320. Its totient is φ = 36923622120.

The previous prime is 55505327561. The next prime is 55505327653. The reversal of 55505327571 is 17572350555.

55505327571 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 53 + 27 + 571 = 666.

It is not a de Polignac number, because 55505327571 - 2²² = 55501133267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55505327531) 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, 2207535 + ... + 2232536.

It is an arithmetic number, because the mean of its divisors is an integer number (5150483520).

Almost surely, 2^55505327571 is an apocalyptic number.

55505327571 is a deficient number, since it is larger than the sum of its proper divisors (26902408749).

55505327571 is a wasteful number, since it uses less digits than its factorization.

55505327571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440543 (or 4440537 counting only the distinct ones).

The product of its (nonzero) digits is 918750, while the sum is 45.

The spelling of 55505327571 in words is "fifty-five billion, five hundred five million, three hundred twenty-seven thousand, five hundred seventy-one".