2053609 has 4 divisors (see below), whose sum is σ = 2056516. Its totient is φ = 2050704.

The previous prime is 2053603. The next prime is 2053619. The reversal of 2053609 is 9063502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 363609 + 1690000 = 603^2 + 1300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2053609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (514129).

2^2053609 is an apocalyptic number.

It is an amenable number.

2053609 is a deficient number, since it is larger than the sum of its proper divisors (2907).

2053609 is a wasteful number, since it uses less digits than its factorization.

2053609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 2053609 is about 1433.0418695907. The cubic root of 2053609 is about 127.1079124963.

It can be divided in two parts, 2053 and 609, that added together give a palindrome (2662).

The spelling of 2053609 in words is "two million, fifty-three thousand, six hundred nine".