85161071 has 4 divisors (see below), whose sum is σ = 86187192. Its totient is φ = 84134952.

The previous prime is 85161067. The next prime is 85161073. The reversal of 85161071 is 17016158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85161071 - 2² = 85161067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85161073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512936 + ... + 513101.

It is an arithmetic number, because the mean of its divisors is an integer number (21546798).

Almost surely, 2^85161071 is an apocalyptic number.

85161071 is a deficient number, since it is larger than the sum of its proper divisors (1026121).

85161071 is a wasteful number, since it uses less digits than its factorization.

85161071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026120.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 85161071 is about 9228.2756244057. The cubic root of 85161071 is about 439.9605181516.

The spelling of 85161071 in words is "eighty-five million, one hundred sixty-one thousand, seventy-one".