85523801 has 4 divisors (see below), whose sum is σ = 93298704. Its totient is φ = 77748900.

The previous prime is 85523797. The next prime is 85523803. The reversal of 85523801 is 10832558.

It is a happy number.

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 85523801 - 2² = 85523797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85523803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3887435 + ... + 3887456.

It is an arithmetic number, because the mean of its divisors is an integer number (23324676).

Almost surely, 2^85523801 is an apocalyptic number.

It is an amenable number.

85523801 is a deficient number, since it is larger than the sum of its proper divisors (7774903).

85523801 is a wasteful number, since it uses less digits than its factorization.

85523801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774902.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 85523801 is about 9247.9079255797. The cubic root of 85523801 is about 440.5842806024.

The spelling of 85523801 in words is "eighty-five million, five hundred twenty-three thousand, eight hundred one".