12655511 has 12 divisors (see below), whose sum is σ = 14255472. Its totient is φ = 11220000.

The previous prime is 12655481. The next prime is 12655547. The reversal of 12655511 is 11555621.

12655511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12655511 - 2¹⁴ = 12639127 is a prime.

It is a super-2 number, since 2×12655511² = 320323917342242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3686 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (1187956).

Almost surely, 2^12655511 is an apocalyptic number.

12655511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12655511 is a deficient number, since it is larger than the sum of its proper divisors (1599961).

12655511 is a wasteful number, since it uses less digits than its factorization.

12655511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614 (or 2603 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 12655511 is about 3557.4585029203. The cubic root of 12655511 is about 233.0379020660.

It can be divided in two parts, 1265 and 5511, that added together give a palindrome (6776).

The spelling of 12655511 in words is "twelve million, six hundred fifty-five thousand, five hundred eleven".