2566189 has 2 divisors, whose sum is σ = 2566190. Its totient is φ = 2566188.

The previous prime is 2566183. The next prime is 2566199. The reversal of 2566189 is 9816652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 116964 = 1565^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566189 - 2²¹ = 469037 is a prime.

It is a Chen prime.

2566189 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2566183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283094 + 1283095.

It is an arithmetic number, because the mean of its divisors is an integer number (1283095).

2^2566189 is an apocalyptic number.

It is an amenable number.

2566189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566189 is an equidigital number, since it uses as much as digits as its factorization.

2566189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 2566189 is about 1601.9328949741. The cubic root of 2566189 is about 136.9082270271.

The spelling of 2566189 in words is "two million, five hundred sixty-six thousand, one hundred eighty-nine".