87215149 has 24 divisors (see below), whose sum is σ = 111464640. Its totient is φ = 67725504.

The previous prime is 87215143. The next prime is 87215153. The reversal of 87215149 is 94151278.

It is not a de Polignac number, because 87215149 - 2⁷ = 87215021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87215143) 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 in 23 ways as a sum of consecutive naturals, for example, 19377 + ... + 23449.

It is an arithmetic number, because the mean of its divisors is an integer number (4644360).

Almost surely, 2^87215149 is an apocalyptic number.

It is an amenable number.

87215149 is a deficient number, since it is larger than the sum of its proper divisors (24249491).

87215149 is a wasteful number, since it uses less digits than its factorization.

87215149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129 (or 4122 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 87215149 is about 9338.9051285469. The cubic root of 87215149 is about 443.4697241172.

The spelling of 87215149 in words is "eighty-seven million, two hundred fifteen thousand, one hundred forty-nine".