51855538255 has 8 divisors (see below), whose sum is σ = 62227949472. Its totient is φ = 41483561568.

The previous prime is 51855538253. The next prime is 51855538289. The reversal of 51855538255 is 55283555815.

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

It is a cyclic number.

It is not a de Polignac number, because 51855538255 - 2¹ = 51855538253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51855538253) 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, 280897 + ... + 427333.

It is an arithmetic number, because the mean of its divisors is an integer number (7778493684).

Almost surely, 2^51855538255 is an apocalyptic number.

51855538255 is a deficient number, since it is larger than the sum of its proper divisors (10372411217).

51855538255 is a wasteful number, since it uses less digits than its factorization.

51855538255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217265.

The product of its digits is 6000000, while the sum is 52.

The spelling of 51855538255 in words is "fifty-one billion, eight hundred fifty-five million, five hundred thirty-eight thousand, two hundred fifty-five".