32541991 has 2 divisors, whose sum is σ = 32541992. Its totient is φ = 32541990.

The previous prime is 32541983. The next prime is 32542009. The reversal of 32541991 is 19914523.

It is a weak prime.

It is an emirp because it is prime and its reverse (19914523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32541991 - 2³ = 32541983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32541911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16270995 + 16270996.

It is an arithmetic number, because the mean of its divisors is an integer number (16270996).

Almost surely, 2^32541991 is an apocalyptic number.

32541991 is a deficient number, since it is larger than the sum of its proper divisors (1).

32541991 is an equidigital number, since it uses as much as digits as its factorization.

32541991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 34.

The square root of 32541991 is about 5704.5587910022. The cubic root of 32541991 is about 319.2625956589.

The spelling of 32541991 in words is "thirty-two million, five hundred forty-one thousand, nine hundred ninety-one".