53501332520 has 64 divisors (see below), whose sum is σ = 123839226000. Its totient is φ = 20787148800.

The previous prime is 53501332477. The next prime is 53501332531. The reversal of 53501332520 is 2523310535.

It can be written as a sum of positive squares in 8 ways, for example, as 38849198404 + 14652134116 = 197102^2 + 121046^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 859406 + ... + 919554.

Almost surely, 2^53501332520 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 53501332520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61919613000).

53501332520 is an abundant number, since it is smaller than the sum of its proper divisors (70337893480).

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

53501332520 is a wasteful number, since it uses less digits than its factorization.

53501332520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60798 (or 60794 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The spelling of 53501332520 in words is "fifty-three billion, five hundred one million, three hundred thirty-two thousand, five hundred twenty".