51555331102005 has 12 divisors (see below), whose sum is σ = 89362573910220. Its totient is φ = 27496176587712.

The previous prime is 51555331102001. The next prime is 51555331102043. The reversal of 51555331102005 is 50020113355515.

51555331102005 is a `hidden beast` number, since 5 + 1 + 5 + 5 + 533 + 110 + 2 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35758378788561 + 15796952313444 = 5979831^2 + 3974538^2 .

It is not a de Polignac number, because 51555331102005 - 2² = 51555331102001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555331102001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572837012200 + ... + 572837012289.

It is an arithmetic number, because the mean of its divisors is an integer number (7446881159185).

Almost surely, 2^{51555331102005} is an apocalyptic number.

It is an amenable number.

51555331102005 is a deficient number, since it is larger than the sum of its proper divisors (37807242808215).

51555331102005 is a wasteful number, since it uses less digits than its factorization.

51555331102005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145674024500 (or 1145674024497 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 36.

The spelling of 51555331102005 in words is "fifty-one trillion, five hundred fifty-five billion, three hundred thirty-one million, one hundred two thousand, five".