32891951 has 2 divisors, whose sum is σ = 32891952. Its totient is φ = 32891950.

The previous prime is 32891891. The next prime is 32891953. The reversal of 32891951 is 15919823.

It is a strong prime.

It is an emirp because it is prime and its reverse (15919823) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32891951 is a prime.

It is a Sophie Germain prime.

Together with 32891953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32891953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16445975 + 16445976.

It is an arithmetic number, because the mean of its divisors is an integer number (16445976).

Almost surely, 2^32891951 is an apocalyptic number.

32891951 is a deficient number, since it is larger than the sum of its proper divisors (1).

32891951 is an equidigital number, since it uses as much as digits as its factorization.

32891951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 38.

The square root of 32891951 is about 5735.1504775376. The cubic root of 32891951 is about 320.4029786408.

The spelling of 32891951 in words is "thirty-two million, eight hundred ninety-one thousand, nine hundred fifty-one".