2509519 has 2 divisors, whose sum is σ = 2509520. Its totient is φ = 2509518.

The previous prime is 2509517. The next prime is 2509531. The reversal of 2509519 is 9159052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2509519 - 2¹ = 2509517 is a prime.

It is a super-2 number, since 2×2509519² = 12595371222722, which contains 22 as substring.

Together with 2509517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2509513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254759 + 1254760.

It is an arithmetic number, because the mean of its divisors is an integer number (1254760).

2^2509519 is an apocalyptic number.

2509519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509519 is an equidigital number, since it uses as much as digits as its factorization.

2509519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 2509519 is about 1584.1461422482. The cubic root of 2509519 is about 135.8929196045.

The spelling of 2509519 in words is "two million, five hundred nine thousand, five hundred nineteen".