12355543 has 2 divisors, whose sum is σ = 12355544. Its totient is φ = 12355542.

The previous prime is 12355513. The next prime is 12355559. The reversal of 12355543 is 34555321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12355543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12355513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177771 + 6177772.

It is an arithmetic number, because the mean of its divisors is an integer number (6177772).

Almost surely, 2^12355543 is an apocalyptic number.

12355543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12355543 is an equidigital number, since it uses as much as digits as its factorization.

12355543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 28.

The square root of 12355543 is about 3515.0452344173. The cubic root of 12355543 is about 231.1819621608.

The spelling of 12355543 in words is "twelve million, three hundred fifty-five thousand, five hundred forty-three".