13652221 has 8 divisors (see below), whose sum is σ = 15257088. Its totient is φ = 12108000.

The previous prime is 13652209. The next prime is 13652251. The reversal of 13652221 is 12225631.

13652221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13652221 - 2⁵ = 13652189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13652192 and 13652201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13652251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14685 + ... + 15586.

It is an arithmetic number, because the mean of its divisors is an integer number (1907136).

Almost surely, 2^13652221 is an apocalyptic number.

13652221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13652221 is a deficient number, since it is larger than the sum of its proper divisors (1604867).

13652221 is a wasteful number, since it uses less digits than its factorization.

13652221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30323.

The product of its digits is 720, while the sum is 22.

The square root of 13652221 is about 3694.8912027284. The cubic root of 13652221 is about 239.0017623278.

Adding to 13652221 its reverse (12225631), we get a palindrome (25877852).

The spelling of 13652221 in words is "thirteen million, six hundred fifty-two thousand, two hundred twenty-one".