51817846055 has 4 divisors (see below), whose sum is σ = 62181415272. Its totient is φ = 41454276840.

The previous prime is 51817846039. The next prime is 51817846079. The reversal of 51817846055 is 55064871815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55064871815 = 5 ⋅11012974363.

It is not a de Polignac number, because 51817846055 - 2⁴ = 51817846039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51817845994 and 51817846012.

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, 5181784601 + ... + 5181784610.

It is an arithmetic number, because the mean of its divisors is an integer number (15545353818).

Almost surely, 2^51817846055 is an apocalyptic number.

51817846055 is a deficient number, since it is larger than the sum of its proper divisors (10363569217).

51817846055 is a wasteful number, since it uses less digits than its factorization.

51817846055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363569216.

The product of its (nonzero) digits is 1344000, while the sum is 50.

The spelling of 51817846055 in words is "fifty-one billion, eight hundred seventeen million, eight hundred forty-six thousand, fifty-five".