32505091 has 2 divisors, whose sum is σ = 32505092. Its totient is φ = 32505090.

The previous prime is 32505089. The next prime is 32505101. The reversal of 32505091 is 19050523.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32505091 - 2¹ = 32505089 is a prime.

Together with 32505089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32505001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16252545 + 16252546.

It is an arithmetic number, because the mean of its divisors is an integer number (16252546).

Almost surely, 2^32505091 is an apocalyptic number.

32505091 is a deficient number, since it is larger than the sum of its proper divisors (1).

32505091 is an equidigital number, since it uses as much as digits as its factorization.

32505091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 32505091 is about 5701.3236182487. The cubic root of 32505091 is about 319.1418773188.

The spelling of 32505091 in words is "thirty-two million, five hundred five thousand, ninety-one".