85731575 has 12 divisors (see below), whose sum is σ = 106560888. Its totient is φ = 68421600.

The previous prime is 85731563. The next prime is 85731589. The reversal of 85731575 is 57513758.

It is not a de Polignac number, because 85731575 - 2¹⁰ = 85730551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7205 + ... + 14945.

It is an arithmetic number, because the mean of its divisors is an integer number (8880074).

Almost surely, 2^85731575 is an apocalyptic number.

85731575 is a deficient number, since it is larger than the sum of its proper divisors (20829313).

85731575 is a wasteful number, since it uses less digits than its factorization.

85731575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8194 (or 8189 counting only the distinct ones).

The product of its digits is 147000, while the sum is 41.

The square root of 85731575 is about 9259.1346787915. The cubic root of 85731575 is about 440.9407814657.

The spelling of 85731575 in words is "eighty-five million, seven hundred thirty-one thousand, five hundred seventy-five".