523704385 has 4 divisors (see below), whose sum is σ = 628445268. Its totient is φ = 418963504.

The previous prime is 523704383. The next prime is 523704413. The reversal of 523704385 is 583407325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303003649 + 220700736 = 17407^2 + 14856^2 .

It is a cyclic number.

It is not a de Polignac number, because 523704385 - 2¹ = 523704383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523704383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52370434 + ... + 52370443.

It is an arithmetic number, because the mean of its divisors is an integer number (157111317).

Almost surely, 2^523704385 is an apocalyptic number.

It is an amenable number.

523704385 is a deficient number, since it is larger than the sum of its proper divisors (104740883).

523704385 is a wasteful number, since it uses less digits than its factorization.

523704385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104740882.

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

The square root of 523704385 is about 22884.5883729640. The cubic root of 523704385 is about 806.0501629197.

The spelling of 523704385 in words is "five hundred twenty-three million, seven hundred four thousand, three hundred eighty-five".