12255691 has 16 divisors (see below), whose sum is σ = 14938560. Its totient is φ = 9815040.

The previous prime is 12255653. The next prime is 12255713. The reversal of 12255691 is 19655221.

12255691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12255691 - 2⁹ = 12255179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12255631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21255 + ... + 21823.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^12255691 is an apocalyptic number.

12255691 is a deficient number, since it is larger than the sum of its proper divisors (2682869).

12255691 is a wasteful number, since it uses less digits than its factorization.

12255691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 5400, while the sum is 31.

The square root of 12255691 is about 3500.8129055978. The cubic root of 12255691 is about 230.5575070258.

The spelling of 12255691 in words is "twelve million, two hundred fifty-five thousand, six hundred ninety-one".