13112556 has 12 divisors (see below), whose sum is σ = 30595992. Its totient is φ = 4370848.

The previous prime is 13112537. The next prime is 13112563. The reversal of 13112556 is 65521131.

It is a tau number, because it is divible by the number of its divisors (12).

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, 546345 + ... + 546368.

It is an arithmetic number, because the mean of its divisors is an integer number (2549666).

Almost surely, 2^13112556 is an apocalyptic number.

It is an amenable number.

13112556 is an abundant number, since it is smaller than the sum of its proper divisors (17483436).

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

13112556 is a wasteful number, since it uses less digits than its factorization.

13112556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092720 (or 1092718 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 13112556 is about 3621.1263441090. The cubic root of 13112556 is about 235.8101268923.

Adding to 13112556 its reverse (65521131), we get a palindrome (78633687).

The spelling of 13112556 in words is "thirteen million, one hundred twelve thousand, five hundred fifty-six".