51502252032 has 756 divisors, whose sum is σ = 195981252516. Its totient is φ = 13377208320.

The previous prime is 51502252019. The next prime is 51502252033. The reversal of 51502252032 is 23025220515.

It is a tau number, because it is divible by the number of its divisors (756).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 51502251987 and 51502252005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51502252033) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 4682022907 + ... + 4682022917.

It is an arithmetic number, because the mean of its divisors is an integer number (259234461).

Almost surely, 2^51502252032 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 51502252032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97990626258).

51502252032 is an abundant number, since it is smaller than the sum of its proper divisors (144479000484).

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

51502252032 is an frugal number, since it uses more digits than its factorization.

51502252032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 51502252032 its reverse (23025220515), we get a palindrome (74527472547).

The spelling of 51502252032 in words is "fifty-one billion, five hundred two million, two hundred fifty-two thousand, thirty-two".