2516515 has 4 divisors (see below), whose sum is σ = 3019824. Its totient is φ = 2013208.

The previous prime is 2516513. The next prime is 2516543. The reversal of 2516515 is 5156152.

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 2516515 - 2¹ = 2516513 is a prime.

It is a Duffinian number.

2516515 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2516515.

It is not an unprimeable number, because it can be changed into a prime (2516513) 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, 251647 + ... + 251656.

It is an arithmetic number, because the mean of its divisors is an integer number (754956).

2^2516515 is an apocalyptic number.

2516515 is a deficient number, since it is larger than the sum of its proper divisors (503309).

2516515 is an equidigital number, since it uses as much as digits as its factorization.

2516515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503308.

The product of its digits is 1500, while the sum is 25.

The square root of 2516515 is about 1586.3527350498. The cubic root of 2516515 is about 136.0190825300.

The spelling of 2516515 in words is "two million, five hundred sixteen thousand, five hundred fifteen".