87215158 has 4 divisors (see below), whose sum is σ = 130822740. Its totient is φ = 43607578.

The previous prime is 87215153. The next prime is 87215171. The reversal of 87215158 is 85151278.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87215153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21803788 + ... + 21803791.

It is an arithmetic number, because the mean of its divisors is an integer number (32705685).

Almost surely, 2^87215158 is an apocalyptic number.

87215158 is a deficient number, since it is larger than the sum of its proper divisors (43607582).

87215158 is a wasteful number, since it uses less digits than its factorization.

87215158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43607581.

The product of its digits is 22400, while the sum is 37.

The square root of 87215158 is about 9338.9056104021. The cubic root of 87215158 is about 443.4697393715.

The spelling of 87215158 in words is "eighty-seven million, two hundred fifteen thousand, one hundred fifty-eight".