53501242521 has 16 divisors (see below), whose sum is σ = 75545676864. Its totient is φ = 33562957824.

The previous prime is 53501242507. The next prime is 53501242567. The reversal of 53501242521 is 12524210535.

53501242521 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 53501242521 - 2⁷ = 53501242393 is a prime.

It is a super-3 number, since 3×53501242521³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53501222521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174601 + ... + 370793.

It is an arithmetic number, because the mean of its divisors is an integer number (4721604804).

Almost surely, 2^53501242521 is an apocalyptic number.

53501242521 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53501242521 is a deficient number, since it is larger than the sum of its proper divisors (22044434343).

53501242521 is a wasteful number, since it uses less digits than its factorization.

53501242521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201560.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 53501242521 in words is "fifty-three billion, five hundred one million, two hundred forty-two thousand, five hundred twenty-one".