523407385 has 16 divisors (see below), whose sum is σ = 641060352. Its totient is φ = 410155200.

The previous prime is 523407347. The next prime is 523407397. The reversal of 523407385 is 583704325.

It is not a de Polignac number, because 523407385 - 2⁷ = 523407257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51040 + ... + 60430.

It is an arithmetic number, because the mean of its divisors is an integer number (40066272).

Almost surely, 2^523407385 is an apocalyptic number.

It is an amenable number.

523407385 is a deficient number, since it is larger than the sum of its proper divisors (117652967).

523407385 is a wasteful number, since it uses less digits than its factorization.

523407385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9624.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 523407385 is about 22878.0983694012. The cubic root of 523407385 is about 805.8977600408.

The spelling of 523407385 in words is "five hundred twenty-three million, four hundred seven thousand, three hundred eighty-five".