52235311521 has 4 divisors (see below), whose sum is σ = 69647082032. Its totient is φ = 34823541012.

The previous prime is 52235311507. The next prime is 52235311543. The reversal of 52235311521 is 12511353225.

52235311521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52235311521 - 2²⁹ = 51698440609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52235311501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8705885251 + ... + 8705885256.

It is an arithmetic number, because the mean of its divisors is an integer number (17411770508).

Almost surely, 2^52235311521 is an apocalyptic number.

It is an amenable number.

52235311521 is a deficient number, since it is larger than the sum of its proper divisors (17411770511).

52235311521 is a wasteful number, since it uses less digits than its factorization.

52235311521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17411770510.

The product of its digits is 9000, while the sum is 30.

Adding to 52235311521 its reverse (12511353225), we get a palindrome (64746664746).

The spelling of 52235311521 in words is "fifty-two billion, two hundred thirty-five million, three hundred eleven thousand, five hundred twenty-one".