87152139 has 16 divisors (see below), whose sum is σ = 130062240. Its totient is φ = 57674880.

The previous prime is 87152071. The next prime is 87152141. The reversal of 87152139 is 93125178.

It is not a de Polignac number, because 87152139 - 2⁷ = 87152011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87152159) 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 15 ways as a sum of consecutive naturals, for example, 8082 + ... + 15479.

It is an arithmetic number, because the mean of its divisors is an integer number (8128890).

Almost surely, 2^87152139 is an apocalyptic number.

87152139 is a deficient number, since it is larger than the sum of its proper divisors (42910101).

87152139 is a wasteful number, since it uses less digits than its factorization.

87152139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707 (or 23701 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 87152139 is about 9335.5309972170. The cubic root of 87152139 is about 443.3629010876.

The spelling of 87152139 in words is "eighty-seven million, one hundred fifty-two thousand, one hundred thirty-nine".