8652221 has 4 divisors (see below), whose sum is σ = 8686944. Its totient is φ = 8617500.

The previous prime is 8652211. The next prime is 8652223. The reversal of 8652221 is 1222568.

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 a de Polignac number, because none of the positive numbers 2^k-8652221 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8652223) 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, 16985 + ... + 17486.

It is an arithmetic number, because the mean of its divisors is an integer number (2171736).

Almost surely, 2^8652221 is an apocalyptic number.

It is an amenable number.

8652221 is a deficient number, since it is larger than the sum of its proper divisors (34723).

8652221 is a wasteful number, since it uses less digits than its factorization.

8652221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34722.

The product of its digits is 1920, while the sum is 26.

The square root of 8652221 is about 2941.4657910640. The cubic root of 8652221 is about 205.2938162437.

Adding to 8652221 its reverse (1222568), we get a palindrome (9874789).

The spelling of 8652221 in words is "eight million, six hundred fifty-two thousand, two hundred twenty-one".