2050209 has 18 divisors (see below), whose sum is σ = 3445650. Its totient is φ = 1171296.

The previous prime is 2050193. The next prime is 2050211. The reversal of 2050209 is 9020502.

It can be written as a sum of positive squares in only one way, i.e., 2039184 + 11025 = 1428^2 + 105^2 .

It is not a de Polignac number, because 2050209 - 2⁴ = 2050193 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2050191 and 2050200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2050219) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1884 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (191425).

2^2050209 is an apocalyptic number.

It is an amenable number.

2050209 is a deficient number, since it is larger than the sum of its proper divisors (1395441).

2050209 is a wasteful number, since it uses less digits than its factorization.

2050209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669 (or 4659 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2050209 is about 1431.8550904334. The cubic root of 2050209 is about 127.0377262009.

The spelling of 2050209 in words is "two million, fifty thousand, two hundred nine".