51005510555 has 8 divisors (see below), whose sum is σ = 61812619344. Its totient is φ = 40400404000.

The previous prime is 51005510513. The next prime is 51005510597. The reversal of 51005510555 is 55501550015.

51005510555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51005510513) and next prime (51005510597).

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

It is not a de Polignac number, because 51005510555 - 2¹⁰ = 51005509531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50500001 + ... + 50501010.

It is an arithmetic number, because the mean of its divisors is an integer number (7726577418).

Almost surely, 2^51005510555 is an apocalyptic number.

51005510555 is a deficient number, since it is larger than the sum of its proper divisors (10807108789).

51005510555 is a wasteful number, since it uses less digits than its factorization.

51005510555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101001117.

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

The spelling of 51005510555 in words is "fifty-one billion, five million, five hundred ten thousand, five hundred fifty-five".