32891161 has 2 divisors, whose sum is σ = 32891162. Its totient is φ = 32891160.

The previous prime is 32891149. The next prime is 32891167. The reversal of 32891161 is 16119823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 5433561 = 5240^2 + 2331^2 .

It is an emirp because it is prime and its reverse (16119823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32891161 - 2⁵ = 32891129 is a prime.

It is a super-3 number, since 3×32891161³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32891167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16445580 + 16445581.

It is an arithmetic number, because the mean of its divisors is an integer number (16445581).

Almost surely, 2^32891161 is an apocalyptic number.

It is an amenable number.

32891161 is a deficient number, since it is larger than the sum of its proper divisors (1).

32891161 is an equidigital number, since it uses as much as digits as its factorization.

32891161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 32891161 is about 5735.0816036043. The cubic root of 32891161 is about 320.4004134704.

The spelling of 32891161 in words is "thirty-two million, eight hundred ninety-one thousand, one hundred sixty-one".