51055501005 has 96 divisors (see below), whose sum is σ = 95035659264. Its totient is φ = 25265461248.

The previous prime is 51055500997. The next prime is 51055501031. The reversal of 51055501005 is 50010555015.

51055501005 is a `hidden beast` number, since 5 + 1 + 0 + 5 + 550 + 100 + 5 = 666.

It is not a de Polignac number, because 51055501005 - 2³ = 51055500997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51055501005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18252267 + ... + 18255063.

It is an arithmetic number, because the mean of its divisors is an integer number (989954784).

Almost surely, 2^51055501005 is an apocalyptic number.

It is an amenable number.

51055501005 is a deficient number, since it is larger than the sum of its proper divisors (43980158259).

51055501005 is a wasteful number, since it uses less digits than its factorization.

51055501005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3152 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The spelling of 51055501005 in words is "fifty-one billion, fifty-five million, five hundred one thousand, five".