32991151 has 2 divisors, whose sum is σ = 32991152. Its totient is φ = 32991150.

The previous prime is 32991149. The next prime is 32991187. The reversal of 32991151 is 15119923.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32991151 - 2¹ = 32991149 is a prime.

Together with 32991149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32991251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16495575 + 16495576.

It is an arithmetic number, because the mean of its divisors is an integer number (16495576).

Almost surely, 2^32991151 is an apocalyptic number.

32991151 is a deficient number, since it is larger than the sum of its proper divisors (1).

32991151 is an equidigital number, since it uses as much as digits as its factorization.

32991151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 31.

The square root of 32991151 is about 5743.7923883093. The cubic root of 32991151 is about 320.7247602635.

The spelling of 32991151 in words is "thirty-two million, nine hundred ninety-one thousand, one hundred fifty-one".