51050055555 has 24 divisors (see below), whose sum is σ = 88492294800. Its totient is φ = 27224994240.

The previous prime is 51050055541. The next prime is 51050055569. The reversal of 51050055555 is 55555005015.

It is a happy number.

51050055555 is a `hidden beast` number, since 5 + 1 + 0 + 50 + 0 + 55 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (51050055541) and next prime (51050055569).

It is not a de Polignac number, because 51050055555 - 2¹¹ = 51050053507 is a prime.

It is a super-2 number, since 2×51050055555² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1073421 + ... + 1119969.

It is an arithmetic number, because the mean of its divisors is an integer number (3687178950).

Almost surely, 2^51050055555 is an apocalyptic number.

51050055555 is a deficient number, since it is larger than the sum of its proper divisors (37442239245).

51050055555 is a wasteful number, since it uses less digits than its factorization.

51050055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70931 (or 70928 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 51050055555 in words is "fifty-one billion, fifty million, fifty-five thousand, five hundred fifty-five".