12554515 has 4 divisors (see below), whose sum is σ = 15065424. Its totient is φ = 10043608.

The previous prime is 12554501. The next prime is 12554533. The reversal of 12554515 is 51545521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51545521 = 53 ⋅972557.

It is a cyclic number.

It is not a de Polignac number, because 12554515 - 2⁷ = 12554387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255447 + ... + 1255456.

It is an arithmetic number, because the mean of its divisors is an integer number (3766356).

Almost surely, 2^12554515 is an apocalyptic number.

12554515 is a deficient number, since it is larger than the sum of its proper divisors (2510909).

12554515 is an equidigital number, since it uses as much as digits as its factorization.

12554515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510908.

The product of its digits is 5000, while the sum is 28.

The square root of 12554515 is about 3543.2351036870. The cubic root of 12554515 is about 232.4163340230.

The spelling of 12554515 in words is "twelve million, five hundred fifty-four thousand, five hundred fifteen".