523387 has 2 divisors, whose sum is σ = 523388. Its totient is φ = 523386.

The previous prime is 523357. The next prime is 523403. The reversal of 523387 is 783325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523387 - 2¹⁵ = 490619 is a prime.

It is not a weakly prime, because it can be changed into another prime (523307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261693 + 261694.

It is an arithmetic number, because the mean of its divisors is an integer number (261694).

2⁵²³³⁸⁷ is an apocalyptic number.

523387 is a deficient number, since it is larger than the sum of its proper divisors (1).

523387 is an equidigital number, since it uses as much as digits as its factorization.

523387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 523387 is about 723.4549052982. The cubic root of 523387 is about 80.5887297547.

The spelling of 523387 in words is "five hundred twenty-three thousand, three hundred eighty-seven".