51504122331 has 12 divisors (see below), whose sum is σ = 76794677440. Its totient is φ = 33228465840.

The previous prime is 51504122321. The next prime is 51504122347. The reversal of 51504122331 is 13322140515.

51504122331 is a `hidden beast` number, since 5 + 1 + 504 + 122 + 3 + 31 = 666.

It is not a de Polignac number, because 51504122331 - 2¹³ = 51504114139 is a prime.

It is a super-2 number, since 2×51504122331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51504122295 and 51504122304.

It is not an unprimeable number, because it can be changed into a prime (51504122311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92301016 + ... + 92301573.

Almost surely, 2^51504122331 is an apocalyptic number.

51504122331 is a deficient number, since it is larger than the sum of its proper divisors (25290555109).

51504122331 is a wasteful number, since it uses less digits than its factorization.

51504122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184602626 (or 184602623 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 51504122331 its reverse (13322140515), we get a palindrome (64826262846).

The spelling of 51504122331 in words is "fifty-one billion, five hundred four million, one hundred twenty-two thousand, three hundred thirty-one".