87322171 has 4 divisors (see below), whose sum is σ = 88753744. Its totient is φ = 85890600.

The previous prime is 87322153. The next prime is 87322177. The reversal of 87322171 is 17122378.

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 87322171 - 2⁹ = 87321659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87322177) 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, 715695 + ... + 715816.

It is an arithmetic number, because the mean of its divisors is an integer number (22188436).

Almost surely, 2^87322171 is an apocalyptic number.

87322171 is a deficient number, since it is larger than the sum of its proper divisors (1431573).

87322171 is a wasteful number, since it uses less digits than its factorization.

87322171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431572.

The product of its digits is 4704, while the sum is 31.

The square root of 87322171 is about 9344.6332726330. The cubic root of 87322171 is about 443.6510443633.

The spelling of 87322171 in words is "eighty-seven million, three hundred twenty-two thousand, one hundred seventy-one".