12755591 has 2 divisors, whose sum is σ = 12755592. Its totient is φ = 12755590.

The previous prime is 12755581. The next prime is 12755599. The reversal of 12755591 is 19555721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12755591 - 2¹⁸ = 12493447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12755599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377795 + 6377796.

It is an arithmetic number, because the mean of its divisors is an integer number (6377796).

Almost surely, 2^12755591 is an apocalyptic number.

12755591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12755591 is an equidigital number, since it uses as much as digits as its factorization.

12755591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 35.

The square root of 12755591 is about 3571.4970250583. The cubic root of 12755591 is about 233.6505791269.

The spelling of 12755591 in words is "twelve million, seven hundred fifty-five thousand, five hundred ninety-one".