85165143 has 16 divisors (see below), whose sum is σ = 131976960. Its totient is φ = 47840256.

The previous prime is 85165103. The next prime is 85165147. The reversal of 85165143 is 34156158.

It is not a de Polignac number, because 85165143 - 2⁸ = 85164887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85165147) 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, 33130 + ... + 35607.

It is an arithmetic number, because the mean of its divisors is an integer number (8248560).

Almost surely, 2^85165143 is an apocalyptic number.

85165143 is a deficient number, since it is larger than the sum of its proper divisors (46811817).

85165143 is a wasteful number, since it uses less digits than its factorization.

85165143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68806.

The product of its digits is 14400, while the sum is 33.

The square root of 85165143 is about 9228.4962480352. The cubic root of 85165143 is about 439.9675303175.

The spelling of 85165143 in words is "eighty-five million, one hundred sixty-five thousand, one hundred forty-three".