85143135 has 48 divisors (see below), whose sum is σ = 172893312. Its totient is φ = 35380800.

The previous prime is 85143133. The next prime is 85143137. The reversal of 85143135 is 53134158.

It is an interprime number because it is at equal distance from previous prime (85143133) and next prime (85143137).

It is not a de Polignac number, because 85143135 - 2¹ = 85143133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85143133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2820 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (3601944).

Almost surely, 2^85143135 is an apocalyptic number.

85143135 is an abundant number, since it is smaller than the sum of its proper divisors (87750177).

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

85143135 is a wasteful number, since it uses less digits than its factorization.

85143135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564 (or 10557 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 85143135 is about 9227.3037773772. The cubic root of 85143135 is about 439.9296288974.

The spelling of 85143135 in words is "eighty-five million, one hundred forty-three thousand, one hundred thirty-five".