2509499 has 2 divisors, whose sum is σ = 2509500. Its totient is φ = 2509498.

The previous prime is 2509483. The next prime is 2509513. The reversal of 2509499 is 9949052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2509499 - 2⁴ = 2509483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2503499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254749 + 1254750.

It is an arithmetic number, because the mean of its divisors is an integer number (1254750).

2^2509499 is an apocalyptic number.

2509499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509499 is an equidigital number, since it uses as much as digits as its factorization.

2509499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 2509499 is about 1584.1398296868. The cubic root of 2509499 is about 135.8925585970.

The spelling of 2509499 in words is "two million, five hundred nine thousand, four hundred ninety-nine".