2057609 has 2 divisors, whose sum is σ = 2057610. Its totient is φ = 2057608.

The previous prime is 2057599. The next prime is 2057611. The reversal of 2057609 is 9067502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 41209 = 1420^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057609 - 2⁸ = 2057353 is a prime.

Together with 2057611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2057639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028804 + 1028805.

It is an arithmetic number, because the mean of its divisors is an integer number (1028805).

2^2057609 is an apocalyptic number.

It is an amenable number.

2057609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057609 is an equidigital number, since it uses as much as digits as its factorization.

2057609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 2057609 is about 1434.4368232864. The cubic root of 2057609 is about 127.1903854988.

The spelling of 2057609 in words is "two million, fifty-seven thousand, six hundred nine".