2075509 has 4 divisors (see below), whose sum is σ = 2097004. Its totient is φ = 2054016.

The previous prime is 2075483. The next prime is 2075537. The reversal of 2075509 is 9055702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9055702 = 2 ⋅4527851.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 442225 = 1278^2 + 665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2075509 is a prime.

It is a Duffinian number.

2075509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2075539) 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, 10602 + ... + 10795.

It is an arithmetic number, because the mean of its divisors is an integer number (524251).

2^2075509 is an apocalyptic number.

It is an amenable number.

2075509 is a deficient number, since it is larger than the sum of its proper divisors (21495).

2075509 is an equidigital number, since it uses as much as digits as its factorization.

2075509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21494.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 2075509 is about 1440.6626947346. The cubic root of 2075509 is about 127.5581485372.

The spelling of 2075509 in words is "two million, seventy-five thousand, five hundred nine".