854591 has 4 divisors (see below), whose sum is σ = 862992. Its totient is φ = 846192.

The previous prime is 854587. The next prime is 854593. The reversal of 854591 is 195458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195458 = 2 ⋅97729.

It is a cyclic number.

It is not a de Polignac number, because 854591 - 2² = 854587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854593) 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 in 3 ways as a sum of consecutive naturals, for example, 4046 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (215748).

2⁸⁵⁴⁵⁹¹ is an apocalyptic number.

854591 is a deficient number, since it is larger than the sum of its proper divisors (8401).

854591 is a wasteful number, since it uses less digits than its factorization.

854591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400.

The product of its digits is 7200, while the sum is 32.

The square root of 854591 is about 924.4409121193. The cubic root of 854591 is about 94.8970630184.

The spelling of 854591 in words is "eight hundred fifty-four thousand, five hundred ninety-one".