4522509 has 6 divisors (see below), whose sum is σ = 6532526. Its totient is φ = 3015000.

The previous prime is 4522501. The next prime is 4522517. The reversal of 4522509 is 9052254.

It is an interprime number because it is at equal distance from previous prime (4522501) and next prime (4522517).

It can be written as a sum of positive squares in only one way, i.e., 4473225 + 49284 = 2115^2 + 222^2 .

It is not a de Polignac number, because 4522509 - 2³ = 4522501 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 (4522501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251242 + ... + 251259.

Almost surely, 2^4522509 is an apocalyptic number.

It is an amenable number.

4522509 is a deficient number, since it is larger than the sum of its proper divisors (2010017).

4522509 is a wasteful number, since it uses less digits than its factorization.

4522509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502507 (or 502504 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 4522509 is about 2126.6191478495. The cubic root of 4522509 is about 165.3711754163.

The spelling of 4522509 in words is "four million, five hundred twenty-two thousand, five hundred nine".