85531093 has 4 divisors (see below), whose sum is σ = 85566348. Its totient is φ = 85495840.

The previous prime is 85531091. The next prime is 85531099. The reversal of 85531093 is 39013558.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65254084 + 20277009 = 8078^2 + 4503^2 .

It is a cyclic number.

It is not a de Polignac number, because 85531093 - 2¹ = 85531091 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 (85531091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13696 + ... + 18937.

It is an arithmetic number, because the mean of its divisors is an integer number (21391587).

Almost surely, 2^85531093 is an apocalyptic number.

It is an amenable number.

85531093 is a deficient number, since it is larger than the sum of its proper divisors (35255).

85531093 is a wasteful number, since it uses less digits than its factorization.

85531093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35254.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 85531093 is about 9248.3021685064. The cubic root of 85531093 is about 440.5968020652.

The spelling of 85531093 in words is "eighty-five million, five hundred thirty-one thousand, ninety-three".