2732509 has 4 divisors (see below), whose sum is σ = 2942716. Its totient is φ = 2522304.

The previous prime is 2732507. The next prime is 2732519. The reversal of 2732509 is 9052372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 2316484 = 645^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 2732509 - 2¹ = 2732507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2732501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105084 + ... + 105109.

It is an arithmetic number, because the mean of its divisors is an integer number (735679).

2^2732509 is an apocalyptic number.

It is an amenable number.

2732509 is a deficient number, since it is larger than the sum of its proper divisors (210207).

2732509 is a wasteful number, since it uses less digits than its factorization.

2732509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210206.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2732509 is about 1653.0302477571. The cubic root of 2732509 is about 139.8043014007.

The spelling of 2732509 in words is "two million, seven hundred thirty-two thousand, five hundred nine".