51332325521 has 8 divisors (see below), whose sum is σ = 51631603200. Its totient is φ = 51033366160.

The previous prime is 51332325487. The next prime is 51332325523. The reversal of 51332325521 is 12552323315.

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 51332325521 - 2¹⁰ = 51332324497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51332325523) 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, 247790 + ... + 405048.

It is an arithmetic number, because the mean of its divisors is an integer number (6453950400).

Almost surely, 2^51332325521 is an apocalyptic number.

It is an amenable number.

51332325521 is a deficient number, since it is larger than the sum of its proper divisors (299277679).

51332325521 is a wasteful number, since it uses less digits than its factorization.

51332325521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159159.

The product of its digits is 27000, while the sum is 32.

Adding to 51332325521 its reverse (12552323315), we get a palindrome (63884648836).

The spelling of 51332325521 in words is "fifty-one billion, three hundred thirty-two million, three hundred twenty-five thousand, five hundred twenty-one".