2189573 has 2 divisors, whose sum is σ = 2189574. Its totient is φ = 2189572.

The previous prime is 2189563. The next prime is 2189599. The reversal of 2189573 is 3759812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1444804 + 744769 = 1202^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189573 - 2¹⁶ = 2124037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094786 + 1094787.

It is an arithmetic number, because the mean of its divisors is an integer number (1094787).

2^2189573 is an apocalyptic number.

It is an amenable number.

2189573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189573 is an equidigital number, since it uses as much as digits as its factorization.

2189573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 2189573 is about 1479.7205817316. The cubic root of 2189573 is about 129.8533454676.

The spelling of 2189573 in words is "two million, one hundred eighty-nine thousand, five hundred seventy-three".