523204221 has 8 divisors (see below), whose sum is σ = 700525440. Its totient is φ = 347342912.

The previous prime is 523204217. The next prime is 523204237. The reversal of 523204221 is 122402325.

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 523204221 - 2² = 523204217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523204021) 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, 364140 + ... + 365573.

It is an arithmetic number, because the mean of its divisors is an integer number (87565680).

Almost surely, 2^523204221 is an apocalyptic number.

It is an amenable number.

523204221 is a deficient number, since it is larger than the sum of its proper divisors (177321219).

523204221 is a wasteful number, since it uses less digits than its factorization.

523204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729955.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 523204221 is about 22873.6577966883. The cubic root of 523204221 is about 805.7934750511.

Adding to 523204221 its reverse (122402325), we get a palindrome (645606546).

The spelling of 523204221 in words is "five hundred twenty-three million, two hundred four thousand, two hundred twenty-one".