533523221 has 12 divisors (see below), whose sum is σ = 677050560. Its totient is φ = 415731960.

The previous prime is 533523197. The next prime is 533523229. The reversal of 533523221 is 122325335.

It is not a de Polignac number, because 533523221 - 2¹⁴ = 533506837 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 (533523229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494381 + ... + 495458.

It is an arithmetic number, because the mean of its divisors is an integer number (56420880).

Almost surely, 2^533523221 is an apocalyptic number.

It is an amenable number.

533523221 is a deficient number, since it is larger than the sum of its proper divisors (143527339).

533523221 is a wasteful number, since it uses less digits than its factorization.

533523221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989864 (or 989857 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 533523221 is about 23098.1215902939. The cubic root of 533523221 is about 811.0564992519.

Adding to 533523221 its reverse (122325335), we get a palindrome (655848556).

The spelling of 533523221 in words is "five hundred thirty-three million, five hundred twenty-three thousand, two hundred twenty-one".