533690221 has 4 divisors (see below), whose sum is σ = 561779200. Its totient is φ = 505601244.

The previous prime is 533690207. The next prime is 533690237. The reversal of 533690221 is 122096335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 533690221 - 2⁵ = 533690189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533690621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14044461 + ... + 14044498.

It is an arithmetic number, because the mean of its divisors is an integer number (140444800).

Almost surely, 2^533690221 is an apocalyptic number.

It is an amenable number.

533690221 is a deficient number, since it is larger than the sum of its proper divisors (28088979).

533690221 is a wasteful number, since it uses less digits than its factorization.

533690221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28088978.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 533690221 is about 23101.7363200258. The cubic root of 533690221 is about 811.1411143166.

The spelling of 533690221 in words is "five hundred thirty-three million, six hundred ninety thousand, two hundred twenty-one".