52311321 has 6 divisors (see below), whose sum is σ = 75560810. Its totient is φ = 34874208.

The previous prime is 52311319. The next prime is 52311323. The reversal of 52311321 is 12311325.

52311321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52311319) and next prime (52311323).

It can be written as a sum of positive squares in only one way, i.e., 48149721 + 4161600 = 6939^2 + 2040^2 .

It is not a de Polignac number, because 52311321 - 2¹ = 52311319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52311294 and 52311303.

It is not an unprimeable number, because it can be changed into a prime (52311323) 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 5 ways as a sum of consecutive naturals, for example, 2906176 + ... + 2906193.

Almost surely, 2^52311321 is an apocalyptic number.

It is an amenable number.

52311321 is a deficient number, since it is larger than the sum of its proper divisors (23249489).

52311321 is a wasteful number, since it uses less digits than its factorization.

52311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5812375 (or 5812372 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 52311321 is about 7232.6565658823. The cubic root of 52311321 is about 373.9945117252.

Adding to 52311321 its reverse (12311325), we get a palindrome (64622646).

The spelling of 52311321 in words is "fifty-two million, three hundred eleven thousand, three hundred twenty-one".