4509513 has 10 divisors (see below), whose sum is σ = 6736554. Its totient is φ = 3006288.

The previous prime is 4509503. The next prime is 4509551. The reversal of 4509513 is 3159054.

It can be written as a sum of positive squares in only one way, i.e., 4359744 + 149769 = 2088^2 + 387^2 .

It is not a de Polignac number, because 4509513 - 2⁸ = 4509257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4509513 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (4509503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27756 + ... + 27917.

Almost surely, 2^4509513 is an apocalyptic number.

It is an amenable number.

4509513 is a deficient number, since it is larger than the sum of its proper divisors (2227041).

4509513 is an equidigital number, since it uses as much as digits as its factorization.

4509513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55685 (or 55676 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 4509513 is about 2123.5613953922. The cubic root of 4509513 is about 165.2126184648.

The spelling of 4509513 in words is "four million, five hundred nine thousand, five hundred thirteen".