85144158 has 48 divisors (see below), whose sum is σ = 201891456. Its totient is φ = 25719120.

The previous prime is 85144153. The next prime is 85144181.

85144158 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85144153) 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 23 ways as a sum of consecutive naturals, for example, 95985 + ... + 96867.

It is an arithmetic number, because the mean of its divisors is an integer number (4206072).

Almost surely, 2^85144158 is an apocalyptic number.

85144158 is an abundant number, since it is smaller than the sum of its proper divisors (116747298).

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

85144158 is a wasteful number, since it uses less digits than its factorization.

85144158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1386 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 85144158 is about 9227.3592105217. The cubic root of 85144158 is about 439.9313908175.

The spelling of 85144158 in words is "eighty-five million, one hundred forty-four thousand, one hundred fifty-eight".