4542509 has 8 divisors (see below), whose sum is σ = 4650048. Its totient is φ = 4436320.

The previous prime is 4542491. The next prime is 4542511. The reversal of 4542509 is 9052454.

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 4542509 - 2⁸ = 4542253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4542529) 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, 9494 + ... + 9960.

It is an arithmetic number, because the mean of its divisors is an integer number (581256).

Almost surely, 2^4542509 is an apocalyptic number.

It is an amenable number.

4542509 is a deficient number, since it is larger than the sum of its proper divisors (107539).

4542509 is a wasteful number, since it uses less digits than its factorization.

4542509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

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

The square root of 4542509 is about 2131.3162599671. The cubic root of 4542509 is about 165.6145919175.

The spelling of 4542509 in words is "four million, five hundred forty-two thousand, five hundred nine".