881591 has 2 divisors, whose sum is σ = 881592. Its totient is φ = 881590.

The previous prime is 881539. The next prime is 881597. The reversal of 881591 is 195188.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 881591 - 2⁶ = 881527 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 (881597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440795 + 440796.

It is an arithmetic number, because the mean of its divisors is an integer number (440796).

2⁸⁸¹⁵⁹¹ is an apocalyptic number.

881591 is a deficient number, since it is larger than the sum of its proper divisors (1).

881591 is an equidigital number, since it uses as much as digits as its factorization.

881591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 32.

The square root of 881591 is about 938.9307748711. The cubic root of 881591 is about 95.8861135011.

The spelling of 881591 in words is "eight hundred eighty-one thousand, five hundred ninety-one".