85531823 has 8 divisors (see below), whose sum is σ = 92197728. Its totient is φ = 78878304.

The previous prime is 85531819. The next prime is 85531829. The reversal of 85531823 is 32813558.

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 85531823 - 2² = 85531819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85531829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15365 + ... + 20177.

It is an arithmetic number, because the mean of its divisors is an integer number (11524716).

Almost surely, 2^85531823 is an apocalyptic number.

85531823 is a deficient number, since it is larger than the sum of its proper divisors (6665905).

85531823 is a wasteful number, since it uses less digits than its factorization.

85531823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193.

The product of its digits is 28800, while the sum is 35.

The square root of 85531823 is about 9248.3416351257. The cubic root of 85531823 is about 440.5980555460.

The spelling of 85531823 in words is "eighty-five million, five hundred thirty-one thousand, eight hundred twenty-three".