2445509 has 8 divisors (see below), whose sum is σ = 2808480. Its totient is φ = 2106000.

The previous prime is 2445481. The next prime is 2445517. The reversal of 2445509 is 9055442.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2445509 - 2⁸ = 2445253 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5642 + ... + 6059.

It is an arithmetic number, because the mean of its divisors is an integer number (351060).

2^2445509 is an apocalyptic number.

It is an amenable number.

2445509 is a deficient number, since it is larger than the sum of its proper divisors (362971).

2445509 is a wasteful number, since it uses less digits than its factorization.

2445509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2445509 is about 1563.8123288937. The cubic root of 2445509 is about 134.7275529608.

The spelling of 2445509 in words is "two million, four hundred forty-five thousand, five hundred nine".