52135321 has 4 divisors (see below), whose sum is σ = 59583232. Its totient is φ = 44687412.

The previous prime is 52135309. The next prime is 52135333. The reversal of 52135321 is 12353125.

52135321 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 an interprime number because it is at equal distance from previous prime (52135309) and next prime (52135333).

It is not a de Polignac number, because 52135321 - 2¹¹ = 52133273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52135292 and 52135301.

It is not an unprimeable number, because it can be changed into a prime (52135121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3723945 + ... + 3723958.

It is an arithmetic number, because the mean of its divisors is an integer number (14895808).

Almost surely, 2^52135321 is an apocalyptic number.

It is an amenable number.

52135321 is a deficient number, since it is larger than the sum of its proper divisors (7447911).

52135321 is an equidigital number, since it uses as much as digits as its factorization.

52135321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447910.

The product of its digits is 900, while the sum is 22.

The square root of 52135321 is about 7220.4792777211. The cubic root of 52135321 is about 373.5746090411.

Adding to 52135321 its reverse (12353125), we get a palindrome (64488446).

The spelling of 52135321 in words is "fifty-two million, one hundred thirty-five thousand, three hundred twenty-one".