85841591 has 8 divisors (see below), whose sum is σ = 96176784. Its totient is φ = 75928320.

The previous prime is 85841521. The next prime is 85841593. The reversal of 85841591 is 19514858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85841591 - 2¹⁰ = 85840567 is a prime.

It is a super-2 number, since 2×85841591² = 14737557490822562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85841593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105050 + ... + 105863.

It is an arithmetic number, because the mean of its divisors is an integer number (12022098).

Almost surely, 2^85841591 is an apocalyptic number.

85841591 is a deficient number, since it is larger than the sum of its proper divisors (10335193).

85841591 is a wasteful number, since it uses less digits than its factorization.

85841591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210961.

The product of its digits is 57600, while the sum is 41.

The square root of 85841591 is about 9265.0737180014. The cubic root of 85841591 is about 441.1293149017.

The spelling of 85841591 in words is "eighty-five million, eight hundred forty-one thousand, five hundred ninety-one".