2315515 has 4 divisors (see below), whose sum is σ = 2778624. Its totient is φ = 1852408.

The previous prime is 2315503. The next prime is 2315539. The reversal of 2315515 is 5155132.

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 2315515 - 2⁹ = 2315003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

2315515 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231547 + ... + 231556.

It is an arithmetic number, because the mean of its divisors is an integer number (694656).

2^2315515 is an apocalyptic number.

2315515 is a deficient number, since it is larger than the sum of its proper divisors (463109).

2315515 is an equidigital number, since it uses as much as digits as its factorization.

2315515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463108.

The product of its digits is 750, while the sum is 22.

The square root of 2315515 is about 1521.6816355598. The cubic root of 2315515 is about 132.2967573492.

The spelling of 2315515 in words is "two million, three hundred fifteen thousand, five hundred fifteen".