523955385 has 48 divisors (see below), whose sum is σ = 997266816. Its totient is φ = 262994688.

The previous prime is 523955347. The next prime is 523955407. The reversal of 523955385 is 583559325.

523955385 is a `hidden beast` number, since 5 + 23 + 95 + 538 + 5 = 666.

It is not a de Polignac number, because 523955385 - 2¹² = 523951289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 523955385.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7972 + ... + 33338.

It is an arithmetic number, because the mean of its divisors is an integer number (20776392).

Almost surely, 2^523955385 is an apocalyptic number.

It is an amenable number.

523955385 is a deficient number, since it is larger than the sum of its proper divisors (473311431).

523955385 is a wasteful number, since it uses less digits than its factorization.

523955385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25404 (or 25392 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 523955385 is about 22890.0717561130. The cubic root of 523955385 is about 806.1789163939.

The spelling of 523955385 in words is "five hundred twenty-three million, nine hundred fifty-five thousand, three hundred eighty-five".