51105556055 has 8 divisors (see below), whose sum is σ = 61332946800. Its totient is φ = 40880258496.

The previous prime is 51105556039. The next prime is 51105556063. The reversal of 51105556055 is 55065550115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51105556055 - 2⁴ = 51105556039 is a prime.

It is a super-2 number, since 2×51105556055² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469070 + ... + 567659.

It is an arithmetic number, because the mean of its divisors is an integer number (7666618350).

Almost surely, 2^51105556055 is an apocalyptic number.

51105556055 is a deficient number, since it is larger than the sum of its proper divisors (10227390745).

51105556055 is a wasteful number, since it uses less digits than its factorization.

51105556055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046593.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 51105556055 in words is "fifty-one billion, one hundred five million, five hundred fifty-six thousand, fifty-five".