523216523 has 2 divisors, whose sum is σ = 523216524. Its totient is φ = 523216522.

The previous prime is 523216501. The next prime is 523216591. The reversal of 523216523 is 325612325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523216523 - 2¹⁸ = 522954379 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (523216823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261608261 + 261608262.

It is an arithmetic number, because the mean of its divisors is an integer number (261608262).

Almost surely, 2^523216523 is an apocalyptic number.

523216523 is a deficient number, since it is larger than the sum of its proper divisors (1).

523216523 is an equidigital number, since it uses as much as digits as its factorization.

523216523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 523216523 is about 22873.9267070610. The cubic root of 523216523 is about 805.7997904905.

Adding to 523216523 its reverse (325612325), we get a palindrome (848828848).

The spelling of 523216523 in words is "five hundred twenty-three million, two hundred sixteen thousand, five hundred twenty-three".