12887455 has 16 divisors (see below), whose sum is σ = 18285120. Its totient is φ = 8531712.

The previous prime is 12887449. The next prime is 12887461. The reversal of 12887455 is 55478821.

It is an interprime number because it is at equal distance from previous prime (12887449) and next prime (12887461).

It is not a de Polignac number, because 12887455 - 2²¹ = 10790303 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 5334 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (1142820).

Almost surely, 2^12887455 is an apocalyptic number.

12887455 is a deficient number, since it is larger than the sum of its proper divisors (5397665).

12887455 is a wasteful number, since it uses less digits than its factorization.

12887455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738.

The product of its digits is 89600, while the sum is 40.

The square root of 12887455 is about 3589.9101660069. The cubic root of 12887455 is about 234.4529602578.

The spelling of 12887455 in words is "twelve million, eight hundred eighty-seven thousand, four hundred fifty-five".