891151 has 2 divisors, whose sum is σ = 891152. Its totient is φ = 891150.

The previous prime is 891133. The next prime is 891161. The reversal of 891151 is 151198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 891151 - 2¹⁷ = 760079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445575 + 445576.

It is an arithmetic number, because the mean of its divisors is an integer number (445576).

2⁸⁹¹¹⁵¹ is an apocalyptic number.

891151 is a deficient number, since it is larger than the sum of its proper divisors (1).

891151 is an equidigital number, since it uses as much as digits as its factorization.

891151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 25.

The square root of 891151 is about 944.0079448818. The cubic root of 891151 is about 96.2314654815.

The spelling of 891151 in words is "eight hundred ninety-one thousand, one hundred fifty-one".