53051312520 has 192 divisors, whose sum is σ = 176231764800. Its totient is φ = 13837401600.

The previous prime is 53051312453. The next prime is 53051312521. The reversal of 53051312520 is 2521315035.

It is a happy number.

53051312520 is a `hidden beast` number, since 5 + 3 + 0 + 5 + 131 + 2 + 520 = 666.

It is not an unprimeable number, because it can be changed into a prime (53051312521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3009091 + ... + 3026669.

It is an arithmetic number, because the mean of its divisors is an integer number (917873775).

Almost surely, 2^53051312520 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 53051312520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88115882400).

53051312520 is an abundant number, since it is smaller than the sum of its proper divisors (123180452280).

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

53051312520 is a wasteful number, since it uses less digits than its factorization.

53051312520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17780 (or 17773 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 53051312520 its reverse (2521315035), we get a palindrome (55572627555).

The spelling of 53051312520 in words is "fifty-three billion, fifty-one million, three hundred twelve thousand, five hundred twenty".