533642221 has 8 divisors (see below), whose sum is σ = 610092864. Its totient is φ = 457245600.

The previous prime is 533642149. The next prime is 533642273. The reversal of 533642221 is 122246335.

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

It is not a de Polignac number, because 533642221 - 2⁷ = 533642093 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 533642221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533640221) 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, 10521 + ... + 34321.

It is an arithmetic number, because the mean of its divisors is an integer number (76261608).

Almost surely, 2^533642221 is an apocalyptic number.

It is an amenable number.

533642221 is a deficient number, since it is larger than the sum of its proper divisors (76450643).

533642221 is a wasteful number, since it uses less digits than its factorization.

533642221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27011.

The product of its digits is 8640, while the sum is 28.

The square root of 533642221 is about 23100.6974137146. The cubic root of 533642221 is about 811.1167956268.

Adding to 533642221 its reverse (122246335), we get a palindrome (655888556).

The spelling of 533642221 in words is "five hundred thirty-three million, six hundred forty-two thousand, two hundred twenty-one".