89165161 has 8 divisors (see below), whose sum is σ = 90347400. Its totient is φ = 87989760.

The previous prime is 89165159. The next prime is 89165173. The reversal of 89165161 is 16156198.

It can be written as a sum of positive squares in 4 ways, for example, as 24443136 + 64722025 = 4944^2 + 8045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89165161 - 2¹ = 89165159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89165161.

It is not an unprimeable number, because it can be changed into a prime (89165861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27801 + ... + 30841.

It is an arithmetic number, because the mean of its divisors is an integer number (11293425).

Almost surely, 2^89165161 is an apocalyptic number.

It is an amenable number.

89165161 is a deficient number, since it is larger than the sum of its proper divisors (1182239).

89165161 is a wasteful number, since it uses less digits than its factorization.

89165161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419.

The product of its digits is 12960, while the sum is 37.

The square root of 89165161 is about 9442.7305902477. The cubic root of 89165161 is about 446.7505193308.

The spelling of 89165161 in words is "eighty-nine million, one hundred sixty-five thousand, one hundred sixty-one".