51171155055 has 48 divisors (see below), whose sum is σ = 92030440320. Its totient is φ = 27276831648.

The previous prime is 51171155047. The next prime is 51171155059. The reversal of 51171155055 is 55055117115.

51171155055 is a `hidden beast` number, since 51 + 1 + 7 + 1 + 1 + 550 + 55 = 666.

It is not a de Polignac number, because 51171155055 - 2³ = 51171155047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51171155059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2520736 + ... + 2540954.

It is an arithmetic number, because the mean of its divisors is an integer number (1917300840).

Almost surely, 2^51171155055 is an apocalyptic number.

51171155055 is a deficient number, since it is larger than the sum of its proper divisors (40859285265).

51171155055 is a wasteful number, since it uses less digits than its factorization.

51171155055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22322 (or 22310 counting only the distinct ones).

The product of its (nonzero) digits is 21875, while the sum is 36.

The spelling of 51171155055 in words is "fifty-one billion, one hundred seventy-one million, one hundred fifty-five thousand, fifty-five".