12555487 has 8 divisors (see below), whose sum is σ = 14484096. Its totient is φ = 10660632.

The previous prime is 12555479. The next prime is 12555509. The reversal of 12555487 is 78455521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12555487 - 2³ = 12555479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7633 + ... + 9130.

It is an arithmetic number, because the mean of its divisors is an integer number (1810512).

Almost surely, 2^12555487 is an apocalyptic number.

12555487 is a deficient number, since it is larger than the sum of its proper divisors (1928609).

12555487 is a wasteful number, since it uses less digits than its factorization.

12555487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16877.

The product of its digits is 56000, while the sum is 37.

The square root of 12555487 is about 3543.3722638187. The cubic root of 12555487 is about 232.4223319408.

The spelling of 12555487 in words is "twelve million, five hundred fifty-five thousand, four hundred eighty-seven".