51504004223 has 6 divisors (see below), whose sum is σ = 59912821296. Its totient is φ = 44146289292.

The previous prime is 51504004207. The next prime is 51504004241. The reversal of 51504004223 is 32240040515.

It is a happy number.

It is not a de Polignac number, because 51504004223 - 2⁴ = 51504004207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51504004192 and 51504004201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504003223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 525551015 + ... + 525551112.

It is an arithmetic number, because the mean of its divisors is an integer number (9985470216).

Almost surely, 2^51504004223 is an apocalyptic number.

51504004223 is a deficient number, since it is larger than the sum of its proper divisors (8408817073).

51504004223 is a wasteful number, since it uses less digits than its factorization.

51504004223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051102141 (or 1051102134 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 51504004223 its reverse (32240040515), we get a palindrome (83744044738).

The spelling of 51504004223 in words is "fifty-one billion, five hundred four million, four thousand, two hundred twenty-three".