536641221 has 8 divisors (see below), whose sum is σ = 746631360. Its totient is φ = 342205952.

The previous prime is 536641213. The next prime is 536641223. The reversal of 536641221 is 122146635.

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 536641221 - 2³ = 536641213 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 (536641223) 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, 3888636 + ... + 3888773.

It is an arithmetic number, because the mean of its divisors is an integer number (93328920).

Almost surely, 2^536641221 is an apocalyptic number.

It is an amenable number.

536641221 is a deficient number, since it is larger than the sum of its proper divisors (209990139).

536641221 is a wasteful number, since it uses less digits than its factorization.

536641221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777435.

The product of its digits is 8640, while the sum is 30.

The square root of 536641221 is about 23165.5179307522. The cubic root of 536641221 is about 812.6334151251.

Adding to 536641221 its reverse (122146635), we get a palindrome (658787856).

The spelling of 536641221 in words is "five hundred thirty-six million, six hundred forty-one thousand, two hundred twenty-one".