51055105055 has 4 divisors (see below), whose sum is σ = 61266126072. Its totient is φ = 40844084040.

The previous prime is 51055105021. The next prime is 51055105081. The reversal of 51055105055 is 55050155015.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51055105055 - 2⁸ = 51055104799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105510501 + ... + 5105510510.

It is an arithmetic number, because the mean of its divisors is an integer number (15316531518).

Almost surely, 2^51055105055 is an apocalyptic number.

51055105055 is a deficient number, since it is larger than the sum of its proper divisors (10211021017).

51055105055 is a wasteful number, since it uses less digits than its factorization.

51055105055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211021016.

The product of its (nonzero) digits is 15625, while the sum is 32.

The spelling of 51055105055 in words is "fifty-one billion, fifty-five million, one hundred five thousand, fifty-five".