85091544 has 48 divisors (see below), whose sum is σ = 230958000. Its totient is φ = 28302144.

The previous prime is 85091543. The next prime is 85091551. The reversal of 85091544 is 44519058.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 85091499 and 85091508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85091543) 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 11 ways as a sum of consecutive naturals, for example, 42142 + ... + 44114.

It is an arithmetic number, because the mean of its divisors is an integer number (4811625).

Almost surely, 2^85091544 is an apocalyptic number.

It is an amenable number.

85091544 is an abundant number, since it is smaller than the sum of its proper divisors (145866456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85091544 is a wasteful number, since it uses less digits than its factorization.

85091544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 85091544 is about 9224.5077917469. The cubic root of 85091544 is about 439.8407550451.

The spelling of 85091544 in words is "eighty-five million, ninety-one thousand, five hundred forty-four".