12511056 has 20 divisors (see below), whose sum is σ = 32320352. Its totient is φ = 4170336.

The previous prime is 12511049. The next prime is 12511087. The reversal of 12511056 is 65011521.

It is a congruent number.

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, 130276 + ... + 130371.

Almost surely, 2^12511056 is an apocalyptic number.

12511056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12511056 is an abundant number, since it is smaller than the sum of its proper divisors (19809296).

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

12511056 is a wasteful number, since it uses less digits than its factorization.

12511056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260658 (or 260652 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 12511056 is about 3537.0971148669. The cubic root of 12511056 is about 232.1478447258.

Adding to 12511056 its reverse (65011521), we get a palindrome (77522577).

The spelling of 12511056 in words is "twelve million, five hundred eleven thousand, fifty-six".