523320523 has 12 divisors (see below), whose sum is σ = 575795304. Its totient is φ = 475270400.

The previous prime is 523320509. The next prime is 523320527. The reversal of 523320523 is 325023325.

It is not a de Polignac number, because 523320523 - 2¹⁷ = 523189451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523320527) 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, 188715 + ... + 191467.

It is an arithmetic number, because the mean of its divisors is an integer number (47982942).

Almost surely, 2^523320523 is an apocalyptic number.

523320523 is a deficient number, since it is larger than the sum of its proper divisors (52474781).

523320523 is a wasteful number, since it uses less digits than its factorization.

523320523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346 (or 4335 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 523320523 is about 22876.1999248127. The cubic root of 523320523 is about 805.8531766908.

Adding to 523320523 its reverse (325023325), we get a palindrome (848343848).

The spelling of 523320523 in words is "five hundred twenty-three million, three hundred twenty thousand, five hundred twenty-three".