87009571 has 8 divisors (see below), whose sum is σ = 95101488. Its totient is φ = 78948000.

The previous prime is 87009523. The next prime is 87009589. The reversal of 87009571 is 17590078.

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 87009571 - 2⁹ = 87009059 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 87009571.

It is not an unprimeable number, because it can be changed into a prime (87009521) 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, 1360 + ... + 13261.

It is an arithmetic number, because the mean of its divisors is an integer number (11887686).

Almost surely, 2^87009571 is an apocalyptic number.

87009571 is a deficient number, since it is larger than the sum of its proper divisors (8091917).

87009571 is a wasteful number, since it uses less digits than its factorization.

87009571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15173.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 87009571 is about 9327.8920984325. The cubic root of 87009571 is about 443.1210104459.

The spelling of 87009571 in words is "eighty-seven million, nine thousand, five hundred seventy-one".