13552021 has 8 divisors (see below), whose sum is σ = 15545024. Its totient is φ = 11573280.

The previous prime is 13552001. The next prime is 13552039. The reversal of 13552021 is 12025531.

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 13552021 - 2¹¹ = 13549973 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 13552021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13552001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (1943128).

Almost surely, 2^13552021 is an apocalyptic number.

It is an amenable number.

13552021 is a deficient number, since it is larger than the sum of its proper divisors (1993003).

13552021 is an equidigital number, since it uses as much as digits as its factorization.

13552021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13552021 is about 3681.3069689989. The cubic root of 13552021 is about 238.4156109340.

Adding to 13552021 its reverse (12025531), we get a palindrome (25577552).

The spelling of 13552021 in words is "thirteen million, five hundred fifty-two thousand, twenty-one".