87518459 has 24 divisors (see below), whose sum is σ = 105787440. Its totient is φ = 72140544.

The previous prime is 87518447. The next prime is 87518467. The reversal of 87518459 is 95481578.

It is not a de Polignac number, because 87518459 - 2⁴ = 87518443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87548459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153527 + ... + 154095.

It is an arithmetic number, because the mean of its divisors is an integer number (4407810).

Almost surely, 2^87518459 is an apocalyptic number.

87518459 is a deficient number, since it is larger than the sum of its proper divisors (18268981).

87518459 is a wasteful number, since it uses less digits than its factorization.

87518459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 692 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 87518459 is about 9355.1300899560. The cubic root of 87518459 is about 443.9832173810.

The spelling of 87518459 in words is "eighty-seven million, five hundred eighteen thousand, four hundred fifty-nine".