32164991 has 2 divisors, whose sum is σ = 32164992. Its totient is φ = 32164990.

The previous prime is 32164961. The next prime is 32165009. The reversal of 32164991 is 19946123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32164991 - 2⁶ = 32164927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32164961) 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, 16082495 + 16082496.

It is an arithmetic number, because the mean of its divisors is an integer number (16082496).

Almost surely, 2^32164991 is an apocalyptic number.

32164991 is a deficient number, since it is larger than the sum of its proper divisors (1).

32164991 is an equidigital number, since it uses as much as digits as its factorization.

32164991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 32164991 is about 5671.4187819275. The cubic root of 32164991 is about 318.0249146520.

The spelling of 32164991 in words is "thirty-two million, one hundred sixty-four thousand, nine hundred ninety-one".