16522789 has 2 divisors, whose sum is σ = 16522790. Its totient is φ = 16522788.

The previous prime is 16522769. The next prime is 16522811. The reversal of 16522789 is 98722561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 3090564 = 3665^2 + 1758^2 .

It is a cyclic number.

It is not a de Polignac number, because 16522789 - 2⁷ = 16522661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16522769) 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 as a sum of consecutive naturals, namely, 8261394 + 8261395.

It is an arithmetic number, because the mean of its divisors is an integer number (8261395).

Almost surely, 2^16522789 is an apocalyptic number.

It is an amenable number.

16522789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16522789 is an equidigital number, since it uses as much as digits as its factorization.

16522789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 16522789 is about 4064.8233663961. The cubic root of 16522789 is about 254.6993200807.

The spelling of 16522789 in words is "sixteen million, five hundred twenty-two thousand, seven hundred eighty-nine".