85143015 has 16 divisors (see below), whose sum is σ = 151365600. Its totient is φ = 45409536.

The previous prime is 85143013. The next prime is 85143017. The reversal of 85143015 is 51034158.

It is an interprime number because it is at equal distance from previous prime (85143013) and next prime (85143017).

It is not a de Polignac number, because 85143015 - 2¹ = 85143013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 85143015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85143013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315210 + ... + 315479.

It is an arithmetic number, because the mean of its divisors is an integer number (9460350).

Almost surely, 2^85143015 is an apocalyptic number.

85143015 is a deficient number, since it is larger than the sum of its proper divisors (66222585).

85143015 is a wasteful number, since it uses less digits than its factorization.

85143015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630703 (or 630697 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 85143015 is about 9227.2972749338. The cubic root of 85143015 is about 439.9294222196.

The spelling of 85143015 in words is "eighty-five million, one hundred forty-three thousand, fifteen".