12545556 has 24 divisors (see below), whose sum is σ = 29463840. Its totient is φ = 4154592.

The previous prime is 12545527. The next prime is 12545563. The reversal of 12545556 is 65554521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (1227660).

Almost surely, 2^12545556 is an apocalyptic number.

It is an amenable number.

12545556 is an abundant number, since it is smaller than the sum of its proper divisors (16918284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12545556 is a wasteful number, since it uses less digits than its factorization.

12545556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6823 (or 6821 counting only the distinct ones).

The product of its digits is 30000, while the sum is 33.

The square root of 12545556 is about 3541.9706379359. The cubic root of 12545556 is about 232.3610361632.

The spelling of 12545556 in words is "twelve million, five hundred forty-five thousand, five hundred fifty-six".