51555030351 has 12 divisors (see below), whose sum is σ = 75557235096. Its totient is φ = 31245472720.

The previous prime is 51555030349. The next prime is 51555030383. The reversal of 51555030351 is 15303055515.

It is not a de Polignac number, because 51555030351 - 2¹ = 51555030349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555030251) 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 11 ways as a sum of consecutive naturals, for example, 71012076 + ... + 71012801.

It is an arithmetic number, because the mean of its divisors is an integer number (6296436258).

Almost surely, 2^51555030351 is an apocalyptic number.

51555030351 is a deficient number, since it is larger than the sum of its proper divisors (24002204745).

51555030351 is a wasteful number, since it uses less digits than its factorization.

51555030351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142024902 (or 142024891 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 33.

Adding to 51555030351 its reverse (15303055515), we get a palindrome (66858085866).

The spelling of 51555030351 in words is "fifty-one billion, five hundred fifty-five million, thirty thousand, three hundred fifty-one".