52320231 has 12 divisors (see below), whose sum is σ = 75858120. Its totient is φ = 34748880.

The previous prime is 52320227. The next prime is 52320253. The reversal of 52320231 is 13202325.

It is not a de Polignac number, because 52320231 - 2² = 52320227 is a prime.

It is a super-2 number, since 2×52320231² = 5474813143786722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52320731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8385 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (6321510).

Almost surely, 2^52320231 is an apocalyptic number.

52320231 is a deficient number, since it is larger than the sum of its proper divisors (23537889).

52320231 is a wasteful number, since it uses less digits than its factorization.

52320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21886 (or 21883 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 52320231 is about 7233.2724959039. The cubic root of 52320231 is about 374.0157442351.

Adding to 52320231 its reverse (13202325), we get a palindrome (65522556).

The spelling of 52320231 in words is "fifty-two million, three hundred twenty thousand, two hundred thirty-one".