85808523 has 4 divisors (see below), whose sum is σ = 114411368. Its totient is φ = 57205680.

The previous prime is 85808501. The next prime is 85808533. The reversal of 85808523 is 32580858.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85808523 - 2⁵ = 85808491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85808533) 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, 14301418 + ... + 14301423.

It is an arithmetic number, because the mean of its divisors is an integer number (28602842).

Almost surely, 2^85808523 is an apocalyptic number.

85808523 is a deficient number, since it is larger than the sum of its proper divisors (28602845).

85808523 is a wasteful number, since it uses less digits than its factorization.

85808523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28602844.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 85808523 is about 9263.2889947362. The cubic root of 85808523 is about 441.0726635065.

The spelling of 85808523 in words is "eighty-five million, eight hundred eight thousand, five hundred twenty-three".