51055424131 has 4 divisors (see below), whose sum is σ = 54058684392. Its totient is φ = 48052163872.

The previous prime is 51055424113. The next prime is 51055424141. The reversal of 51055424131 is 13142455015.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51055424131 is a prime.

It is a super-2 number, since 2×51055424131² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51055424093 and 51055424102.

It is not an unprimeable number, because it can be changed into a prime (51055424141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501630105 + ... + 1501630138.

It is an arithmetic number, because the mean of its divisors is an integer number (13514671098).

Almost surely, 2^51055424131 is an apocalyptic number.

51055424131 is a deficient number, since it is larger than the sum of its proper divisors (3003260261).

51055424131 is a wasteful number, since it uses less digits than its factorization.

51055424131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003260260.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 51055424131 its reverse (13142455015), we get a palindrome (64197879146).

The spelling of 51055424131 in words is "fifty-one billion, fifty-five million, four hundred twenty-four thousand, one hundred thirty-one".