12355641 has 6 divisors (see below), whose sum is σ = 17847050. Its totient is φ = 8237088.

The previous prime is 12355631. The next prime is 12355649. The reversal of 12355641 is 14655321.

12355641 is a `hidden beast` number, since 12 + 3 + 5 + 5 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 6125625 = 2496^2 + 2475^2 .

It is not a de Polignac number, because 12355641 - 2⁷ = 12355513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12355649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686416 + ... + 686433.

Almost surely, 2^12355641 is an apocalyptic number.

It is an amenable number.

12355641 is a deficient number, since it is larger than the sum of its proper divisors (5491409).

12355641 is a wasteful number, since it uses less digits than its factorization.

12355641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372855 (or 1372852 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12355641 is about 3515.0591744663. The cubic root of 12355641 is about 231.1825733783.

It can be divided in two parts, 12355 and 641, that added together give a square (12996 = 114²).

The spelling of 12355641 in words is "twelve million, three hundred fifty-five thousand, six hundred forty-one".