87653171 has 4 divisors (see below), whose sum is σ = 87672000. Its totient is φ = 87634344.

The previous prime is 87653131. The next prime is 87653183. The reversal of 87653171 is 17135678.

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 87653171 - 2¹⁸ = 87391027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87653131) 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, 3230 + ... + 13628.

It is an arithmetic number, because the mean of its divisors is an integer number (21918000).

Almost surely, 2^87653171 is an apocalyptic number.

87653171 is a deficient number, since it is larger than the sum of its proper divisors (18829).

87653171 is a wasteful number, since it uses less digits than its factorization.

87653171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18828.

The product of its digits is 35280, while the sum is 38.

The square root of 87653171 is about 9362.3272213697. The cubic root of 87653171 is about 444.2108996582.

The spelling of 87653171 in words is "eighty-seven million, six hundred fifty-three thousand, one hundred seventy-one".