52015321 has 4 divisors (see below), whose sum is σ = 52037392. Its totient is φ = 51993252.

The previous prime is 52015297. The next prime is 52015343. The reversal of 52015321 is 12351025.

52015321 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 a cyclic number.

It is not a de Polignac number, because 52015321 - 2⁷ = 52015193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52015361) 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, 7011 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (13009348).

Almost surely, 2^52015321 is an apocalyptic number.

It is an amenable number.

52015321 is a deficient number, since it is larger than the sum of its proper divisors (22071).

52015321 is a wasteful number, since it uses less digits than its factorization.

52015321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22070.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 52015321 is about 7212.1647929037. The cubic root of 52015321 is about 373.2877696484.

Adding to 52015321 its reverse (12351025), we get a palindrome (64366346).

The spelling of 52015321 in words is "fifty-two million, fifteen thousand, three hundred twenty-one".