2509315 has 4 divisors (see below), whose sum is σ = 3011184. Its totient is φ = 2007448.

The previous prime is 2509313. The next prime is 2509333. The reversal of 2509315 is 5139052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2509315 - 2¹ = 2509313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2509315.

It is not an unprimeable number, because it can be changed into a prime (2509313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250927 + ... + 250936.

It is an arithmetic number, because the mean of its divisors is an integer number (752796).

2^2509315 is an apocalyptic number.

2509315 is a deficient number, since it is larger than the sum of its proper divisors (501869).

2509315 is an equidigital number, since it uses as much as digits as its factorization.

2509315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501868.

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

The square root of 2509315 is about 1584.0817529408. The cubic root of 2509315 is about 135.8892372379.

The spelling of 2509315 in words is "two million, five hundred nine thousand, three hundred fifteen".