87023171 has 16 divisors (see below), whose sum is σ = 92383200. Its totient is φ = 81849600.

The previous prime is 87023159. The next prime is 87023201. The reversal of 87023171 is 17132078.

It is a de Polignac number, because none of the positive numbers 2^k-87023171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87023071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309551 + ... + 309831.

It is an arithmetic number, because the mean of its divisors is an integer number (5773950).

Almost surely, 2^87023171 is an apocalyptic number.

87023171 is a deficient number, since it is larger than the sum of its proper divisors (5360029).

87023171 is a wasteful number, since it uses less digits than its factorization.

87023171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 87023171 is about 9328.6210663742. The cubic root of 87023171 is about 443.1440965337.

The spelling of 87023171 in words is "eighty-seven million, twenty-three thousand, one hundred seventy-one".