12540515 has 8 divisors (see below), whose sum is σ = 16206288. Its totient is φ = 9260640.

The previous prime is 12540503. The next prime is 12540529. The reversal of 12540515 is 51504521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12540515 - 2⁸ = 12540259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96401 + ... + 96530.

It is an arithmetic number, because the mean of its divisors is an integer number (2025786).

Almost surely, 2^12540515 is an apocalyptic number.

12540515 is a deficient number, since it is larger than the sum of its proper divisors (3665773).

12540515 is a wasteful number, since it uses less digits than its factorization.

12540515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192949.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 12540515 is about 3541.2589569248. The cubic root of 12540515 is about 232.3299098982.

The spelling of 12540515 in words is "twelve million, five hundred forty thousand, five hundred fifteen".