12584855 has 4 divisors (see below), whose sum is σ = 15101832. Its totient is φ = 10067880.

The previous prime is 12584837. The next prime is 12584863. The reversal of 12584855 is 55848521.

12584855 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 55848521 = 3691 ⋅15131.

It is not a de Polignac number, because 12584855 - 2⁸ = 12584599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258481 + ... + 1258490.

It is an arithmetic number, because the mean of its divisors is an integer number (3775458).

Almost surely, 2^12584855 is an apocalyptic number.

12584855 is a deficient number, since it is larger than the sum of its proper divisors (2516977).

12584855 is an equidigital number, since it uses as much as digits as its factorization.

12584855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516976.

The product of its digits is 64000, while the sum is 38.

The square root of 12584855 is about 3547.5139182250. The cubic root of 12584855 is about 232.6034071946.

The spelling of 12584855 in words is "twelve million, five hundred eighty-four thousand, eight hundred fifty-five".