85804081 has 4 divisors (see below), whose sum is σ = 93604464. Its totient is φ = 78003700.

The previous prime is 85804067. The next prime is 85804087. The reversal of 85804081 is 18040858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85804081 - 2¹¹ = 85802033 is a prime.

It is a super-2 number, since 2×85804081² = 14724680632509122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85804087) 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, 3900175 + ... + 3900196.

It is an arithmetic number, because the mean of its divisors is an integer number (23401116).

Almost surely, 2^85804081 is an apocalyptic number.

It is an amenable number.

85804081 is a deficient number, since it is larger than the sum of its proper divisors (7800383).

85804081 is a wasteful number, since it uses less digits than its factorization.

85804081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800382.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 85804081 is about 9263.0492279810. The cubic root of 85804081 is about 441.0650524576.

The spelling of 85804081 in words is "eighty-five million, eight hundred four thousand, eighty-one".