523641 has 8 divisors (see below), whose sum is σ = 728640. Its totient is φ = 333872.

The previous prime is 523639. The next prime is 523657. The reversal of 523641 is 146325.

It is a happy number.

523641 is nontrivially palindromic in base 14.

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 523641 - 2¹ = 523639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (523631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3726 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (91080).

2⁵²³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

523641 is a deficient number, since it is larger than the sum of its proper divisors (204999).

523641 is a wasteful number, since it uses less digits than its factorization.

523641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615.

The product of its digits is 720, while the sum is 21.

The square root of 523641 is about 723.6304305376. The cubic root of 523641 is about 80.6017642314.

Adding to 523641 its reverse (146325), we get a palindrome (669966).

The spelling of 523641 in words is "five hundred twenty-three thousand, six hundred forty-one".