87107161 has 4 divisors (see below), whose sum is σ = 87127092. Its totient is φ = 87087232.

The previous prime is 87107159. The next prime is 87107173. The reversal of 87107161 is 16170178.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61544025 + 25563136 = 7845^2 + 5056^2 .

It is a cyclic number.

It is not a de Polignac number, because 87107161 - 2¹ = 87107159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87107101) 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, 256 + ... + 13201.

It is an arithmetic number, because the mean of its divisors is an integer number (21781773).

Almost surely, 2^87107161 is an apocalyptic number.

It is an amenable number.

87107161 is a deficient number, since it is larger than the sum of its proper divisors (19931).

87107161 is a wasteful number, since it uses less digits than its factorization.

87107161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19930.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 87107161 is about 9333.1217178391. The cubic root of 87107161 is about 443.2866168323.

The spelling of 87107161 in words is "eighty-seven million, one hundred seven thousand, one hundred sixty-one".