51252322432 has 64 divisors (see below), whose sum is σ = 108185932800. Its totient is φ = 24101883904.

The previous prime is 51252322421. The next prime is 51252322439. The reversal of 51252322432 is 23422325215.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 51252322394 and 51252322403.

It is not an unprimeable number, because it can be changed into a prime (51252322439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3437169 + ... + 3452047.

It is an arithmetic number, because the mean of its divisors is an integer number (1690405200).

Almost surely, 2^51252322432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51252322432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54092966400).

51252322432 is an abundant number, since it is smaller than the sum of its proper divisors (56933610368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51252322432 is a wasteful number, since it uses less digits than its factorization.

51252322432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16493 (or 16481 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

Adding to 51252322432 its reverse (23422325215), we get a palindrome (74674647647).

The spelling of 51252322432 in words is "fifty-one billion, two hundred fifty-two million, three hundred twenty-two thousand, four hundred thirty-two".