12549115 has 4 divisors (see below), whose sum is σ = 15058944. Its totient is φ = 10039288.

The previous prime is 12549113. The next prime is 12549127. The reversal of 12549115 is 51194521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51194521 = 7 ⋅7313503.

It is a cyclic number.

It is not a de Polignac number, because 12549115 - 2¹ = 12549113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12549113) 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, 1254907 + ... + 1254916.

It is an arithmetic number, because the mean of its divisors is an integer number (3764736).

Almost surely, 2^12549115 is an apocalyptic number.

12549115 is a deficient number, since it is larger than the sum of its proper divisors (2509829).

12549115 is an equidigital number, since it uses as much as digits as its factorization.

12549115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509828.

The product of its digits is 1800, while the sum is 28.

The square root of 12549115 is about 3542.4730062486. The cubic root of 12549115 is about 232.3830066187.

The spelling of 12549115 in words is "twelve million, five hundred forty-nine thousand, one hundred fifteen".