523020605 has 8 divisors (see below), whose sum is σ = 634095672. Its totient is φ = 414102528.

The previous prime is 523020571. The next prime is 523020607. The reversal of 523020605 is 506020325.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 141443449 + 381577156 = 11893^2 + 19534^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523020605 - 2⁶ = 523020541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523020607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538712 + ... + 539681.

It is an arithmetic number, because the mean of its divisors is an integer number (79261959).

Almost surely, 2^523020605 is an apocalyptic number.

It is an amenable number.

523020605 is a deficient number, since it is larger than the sum of its proper divisors (111075067).

523020605 is a wasteful number, since it uses less digits than its factorization.

523020605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078495.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 523020605 is about 22869.6437444924. The cubic root of 523020605 is about 805.6992009096.

The spelling of 523020605 in words is "five hundred twenty-three million, twenty thousand, six hundred five".