536566221 has 16 divisors (see below), whose sum is σ = 814302720. Its totient is φ = 348985440.

The previous prime is 536566201. The next prime is 536566229. The reversal of 536566221 is 122665635.

It is a happy number.

It is not a de Polignac number, because 536566221 - 2¹⁵ = 536533453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536566229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241245 + ... + 243458.

It is an arithmetic number, because the mean of its divisors is an integer number (50893920).

Almost surely, 2^536566221 is an apocalyptic number.

It is an amenable number.

536566221 is a deficient number, since it is larger than the sum of its proper divisors (277736499).

536566221 is a wasteful number, since it uses less digits than its factorization.

536566221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484753 (or 484747 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 536566221 is about 23163.8990888840. The cubic root of 536566221 is about 812.5955559725.

The spelling of 536566221 in words is "five hundred thirty-six million, five hundred sixty-six thousand, two hundred twenty-one".