51055510551 has 8 divisors (see below), whose sum is σ = 68075867760. Its totient is φ = 34036080192.

The previous prime is 51055510549. The next prime is 51055510567. The reversal of 51055510551 is 15501555015.

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

It is not a de Polignac number, because 51055510551 - 2¹ = 51055510549 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055510951) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 90966 + ... + 332243.

It is an arithmetic number, because the mean of its divisors is an integer number (8509483470).

Almost surely, 2^51055510551 is an apocalyptic number.

51055510551 is a deficient number, since it is larger than the sum of its proper divisors (17020357209).

51055510551 is a wasteful number, since it uses less digits than its factorization.

51055510551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463425.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 51055510551 in words is "fifty-one billion, fifty-five million, five hundred ten thousand, five hundred fifty-one".