16552189 has 2 divisors, whose sum is σ = 16552190. Its totient is φ = 16552188.

The previous prime is 16552153. The next prime is 16552213. The reversal of 16552189 is 98125561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 6579225 = 3158^2 + 2565^2 .

It is an emirp because it is prime and its reverse (98125561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16552189 - 2⁹ = 16551677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16552489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8276094 + 8276095.

It is an arithmetic number, because the mean of its divisors is an integer number (8276095).

Almost surely, 2^16552189 is an apocalyptic number.

It is an amenable number.

16552189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16552189 is an equidigital number, since it uses as much as digits as its factorization.

16552189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 16552189 is about 4068.4381524118. The cubic root of 16552189 is about 254.8502978811.

It can be divided in two parts, 1655 and 2189, that added together give a square (3844 = 62²).

The spelling of 16552189 in words is "sixteen million, five hundred fifty-two thousand, one hundred eighty-nine".