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12515 = 52503
BaseRepresentation
bin11000011100011
3122011112
43003203
5400030
6133535
751326
oct30343
918145
1012515
119448
1272ab
135909
1447bd
153a95
hex30e3

12515 has 4 divisors (see below), whose sum is σ = 15024. Its totient is φ = 10008.

The previous prime is 12511. The next prime is 12517. The reversal of 12515 is 51521.

12515 = 42 + 52 + ... + 332.

12515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12515 - 22 = 12511 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12515.

It is not an unprimeable number, because it can be changed into a prime (12511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1247 + ... + 1256.

It is an arithmetic number, because the mean of its divisors is an integer number (3756).

212515 is an apocalyptic number.

12515 is a deficient number, since it is larger than the sum of its proper divisors (2509).

12515 is an equidigital number, since it uses as much as digits as its factorization.

12515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508.

The product of its digits is 50, while the sum is 14.

The square root of 12515 is about 111.8704608018. The cubic root of 12515 is about 23.2172236349.

The spelling of 12515 in words is "twelve thousand, five hundred fifteen".

Divisors: 1 5 2503 12515