53501332521 has 48 divisors (see below), whose sum is σ = 89443108608. Its totient is φ = 28195776000.

The previous prime is 53501332477. The next prime is 53501332531. The reversal of 53501332521 is 12523310535.

53501332521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53501332521 - 2⁷ = 53501332393 is a prime.

It is a super-2 number, since 2×53501332521² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53501332531) 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, 2283456 + ... + 2306766.

It is an arithmetic number, because the mean of its divisors is an integer number (1863398096).

Almost surely, 2^53501332521 is an apocalyptic number.

It is an amenable number.

53501332521 is a deficient number, since it is larger than the sum of its proper divisors (35941776087).

53501332521 is a wasteful number, since it uses less digits than its factorization.

53501332521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24542 (or 24535 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 53501332521 in words is "fifty-three billion, five hundred one million, three hundred thirty-two thousand, five hundred twenty-one".