87158159 has 4 divisors (see below), whose sum is σ = 95081640. Its totient is φ = 79234680.

The previous prime is 87158153. The next prime is 87158191. The reversal of 87158159 is 95185178.

It is a happy number.

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 87158159 - 2¹⁶ = 87092623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87158153) 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, 3961724 + ... + 3961745.

It is an arithmetic number, because the mean of its divisors is an integer number (23770410).

Almost surely, 2^87158159 is an apocalyptic number.

87158159 is a deficient number, since it is larger than the sum of its proper divisors (7923481).

87158159 is a wasteful number, since it uses less digits than its factorization.

87158159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923480.

The product of its digits is 100800, while the sum is 44.

The square root of 87158159 is about 9335.8534157301. The cubic root of 87158159 is about 443.3731092257.

The spelling of 87158159 in words is "eighty-seven million, one hundred fifty-eight thousand, one hundred fifty-nine".