533385921 has 4 divisors (see below), whose sum is σ = 711181232. Its totient is φ = 355590612.

The previous prime is 533385913. The next prime is 533385947. The reversal of 533385921 is 129583335.

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 not a de Polignac number, because 533385921 - 2³ = 533385913 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 533385921.

It is not an unprimeable number, because it can be changed into a prime (533385911) 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, 88897651 + ... + 88897656.

It is an arithmetic number, because the mean of its divisors is an integer number (177795308).

Almost surely, 2^533385921 is an apocalyptic number.

It is an amenable number.

533385921 is a deficient number, since it is larger than the sum of its proper divisors (177795311).

533385921 is a wasteful number, since it uses less digits than its factorization.

533385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177795310.

The product of its digits is 97200, while the sum is 39.

The square root of 533385921 is about 23095.1492959019. The cubic root of 533385921 is about 810.9869192680.

The spelling of 533385921 in words is "five hundred thirty-three million, three hundred eighty-five thousand, nine hundred twenty-one".