523601 has 4 divisors (see below), whose sum is σ = 563892. Its totient is φ = 483312.

The previous prime is 523597. The next prime is 523603. The reversal of 523601 is 106325.

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 297025 + 226576 = 545^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 523601 - 2² = 523597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523601.

It is not an unprimeable number, because it can be changed into a prime (523603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20126 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (140973).

2⁵²³⁶⁰¹ is an apocalyptic number.

It is an amenable number.

523601 is a deficient number, since it is larger than the sum of its proper divisors (40291).

523601 is a wasteful number, since it uses less digits than its factorization.

523601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40290.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 523601 is about 723.6027915922. The cubic root of 523601 is about 80.5997118376.

Adding to 523601 its reverse (106325), we get a palindrome (629926).

The spelling of 523601 in words is "five hundred twenty-three thousand, six hundred one".