955891 has 2 divisors, whose sum is σ = 955892. Its totient is φ = 955890.

The previous prime is 955883. The next prime is 955901. The reversal of 955891 is 198559.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 955891 - 2³ = 955883 is a prime.

It is an Ulam number.

955891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 955891.

It is not a weakly prime, because it can be changed into another prime (955841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477945 + 477946.

It is an arithmetic number, because the mean of its divisors is an integer number (477946).

2⁹⁵⁵⁸⁹¹ is an apocalyptic number.

955891 is a deficient number, since it is larger than the sum of its proper divisors (1).

955891 is an equidigital number, since it uses as much as digits as its factorization.

955891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The square root of 955891 is about 977.6967832616. The cubic root of 955891 is about 98.5075363349.

The spelling of 955891 in words is "nine hundred fifty-five thousand, eight hundred ninety-one".