2057209 has 8 divisors (see below), whose sum is σ = 2564928. Its totient is φ = 1602960.

The previous prime is 2057203. The next prime is 2057227. The reversal of 2057209 is 9027502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2057209 - 2⁵ = 2057177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13282 + ... + 13435.

It is an arithmetic number, because the mean of its divisors is an integer number (320616).

2^2057209 is an apocalyptic number.

It is an amenable number.

2057209 is a deficient number, since it is larger than the sum of its proper divisors (507719).

2057209 is a wasteful number, since it uses less digits than its factorization.

2057209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26735.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 2057209 is about 1434.2973889679. The cubic root of 2057209 is about 127.1821430110.

The spelling of 2057209 in words is "two million, fifty-seven thousand, two hundred nine".