87134161 has 4 divisors (see below), whose sum is σ = 87157872. Its totient is φ = 87110452.

The previous prime is 87134141. The next prime is 87134191. The reversal of 87134161 is 16143178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87134161 - 2¹¹ = 87132113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87134141) 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, 5035 + ... + 14128.

It is an arithmetic number, because the mean of its divisors is an integer number (21789468).

Almost surely, 2^87134161 is an apocalyptic number.

It is an amenable number.

87134161 is a deficient number, since it is larger than the sum of its proper divisors (23711).

87134161 is a wasteful number, since it uses less digits than its factorization.

87134161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710.

The product of its digits is 4032, while the sum is 31.

The square root of 87134161 is about 9334.5680671363. The cubic root of 87134161 is about 443.3324129226.

The spelling of 87134161 in words is "eighty-seven million, one hundred thirty-four thousand, one hundred sixty-one".