12855557 has 8 divisors (see below), whose sum is σ = 15103200. Its totient is φ = 10787760.

The previous prime is 12855529. The next prime is 12855589. The reversal of 12855557 is 75555821.

12855557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12855557 - 2²² = 8661253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12855557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44807 + ... + 45092.

It is an arithmetic number, because the mean of its divisors is an integer number (1887900).

Almost surely, 2^12855557 is an apocalyptic number.

It is an amenable number.

12855557 is a deficient number, since it is larger than the sum of its proper divisors (2247643).

12855557 is a wasteful number, since it uses less digits than its factorization.

12855557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89923.

The product of its digits is 70000, while the sum is 38.

The square root of 12855557 is about 3585.4646839705. The cubic root of 12855557 is about 234.2593673631.

The spelling of 12855557 in words is "twelve million, eight hundred fifty-five thousand, five hundred fifty-seven".