85715157 has 16 divisors (see below), whose sum is σ = 125140032. Its totient is φ = 51755520.

The previous prime is 85715153. The next prime is 85715171. The reversal of 85715157 is 75151758.

It is a happy number.

It is not a de Polignac number, because 85715157 - 2² = 85715153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85715153) 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, 4453 + ... + 13829.

It is an arithmetic number, because the mean of its divisors is an integer number (7821252).

Almost surely, 2^85715157 is an apocalyptic number.

It is an amenable number.

85715157 is a deficient number, since it is larger than the sum of its proper divisors (39424875).

85715157 is a wasteful number, since it uses less digits than its factorization.

85715157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9668.

The product of its digits is 49000, while the sum is 39.

The square root of 85715157 is about 9258.2480524125. The cubic root of 85715157 is about 440.9126322572.

The spelling of 85715157 in words is "eighty-five million, seven hundred fifteen thousand, one hundred fifty-seven".