3245509 has 4 divisors (see below), whose sum is σ = 3249900. Its totient is φ = 3241120.

The previous prime is 3245503. The next prime is 3245537. The reversal of 3245509 is 9055423.

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 717409 + 2528100 = 847^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 3245509 - 2¹³ = 3237317 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 (3245503) 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, 784 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (812475).

Almost surely, 2^3245509 is an apocalyptic number.

It is an amenable number.

3245509 is a deficient number, since it is larger than the sum of its proper divisors (4391).

3245509 is an equidigital number, since it uses as much as digits as its factorization.

3245509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 3245509 is about 1801.5296278441. The cubic root of 3245509 is about 148.0565434058.

The spelling of 3245509 in words is "three million, two hundred forty-five thousand, five hundred nine".