85105801 has 4 divisors (see below), whose sum is σ = 92842704. Its totient is φ = 77368900.

The previous prime is 85105799. The next prime is 85105841. The reversal of 85105801 is 10850158.

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 85105801 - 2¹ = 85105799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85105801.

It is not an unprimeable number, because it can be changed into a prime (85105841) 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, 3868435 + ... + 3868456.

It is an arithmetic number, because the mean of its divisors is an integer number (23210676).

Almost surely, 2^85105801 is an apocalyptic number.

It is an amenable number.

85105801 is a deficient number, since it is larger than the sum of its proper divisors (7736903).

85105801 is a wasteful number, since it uses less digits than its factorization.

85105801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736902.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 85105801 is about 9225.2805377398. The cubic root of 85105801 is about 439.8653186275.

Adding to 85105801 its reverse (10850158), we get a palindrome (95955959).

The spelling of 85105801 in words is "eighty-five million, one hundred five thousand, eight hundred one".