2509513 has 2 divisors, whose sum is σ = 2509514. Its totient is φ = 2509512.

The previous prime is 2509499. The next prime is 2509517. The reversal of 2509513 is 3159052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2424249 + 85264 = 1557^2 + 292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2509513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2509517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254756 + 1254757.

It is an arithmetic number, because the mean of its divisors is an integer number (1254757).

2^2509513 is an apocalyptic number.

It is an amenable number.

2509513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509513 is an equidigital number, since it uses as much as digits as its factorization.

2509513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 2509513 is about 1584.1442484824. The cubic root of 2509513 is about 135.8928113024.

The spelling of 2509513 in words is "two million, five hundred nine thousand, five hundred thirteen".