12765515 has 16 divisors (see below), whose sum is σ = 17565120. Its totient is φ = 8724480.

The previous prime is 12765499. The next prime is 12765517. The reversal of 12765515 is 51556721.

It is not a de Polignac number, because 12765515 - 2⁴ = 12765499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12765517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19595 + ... + 20235.

It is an arithmetic number, because the mean of its divisors is an integer number (1097820).

Almost surely, 2^12765515 is an apocalyptic number.

12765515 is a deficient number, since it is larger than the sum of its proper divisors (4799605).

12765515 is an equidigital number, since it uses as much as digits as its factorization.

12765515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its digits is 10500, while the sum is 32.

The square root of 12765515 is about 3572.8860883045. The cubic root of 12765515 is about 233.7111577199.

The spelling of 12765515 in words is "twelve million, seven hundred sixty-five thousand, five hundred fifteen".