80987159 has 16 divisors (see below), whose sum is σ = 91576320. Its totient is φ = 70956000.

The previous prime is 80987147. The next prime is 80987161. The reversal of 80987159 is 95178908.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80987159 - 2⁸ = 80986903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80987119) 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, 149429 + ... + 149969.

It is an arithmetic number, because the mean of its divisors is an integer number (5723520).

Almost surely, 2^80987159 is an apocalyptic number.

80987159 is a deficient number, since it is larger than the sum of its proper divisors (10589161).

80987159 is a wasteful number, since it uses less digits than its factorization.

80987159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 80987159 is about 8999.2865828353. The cubic root of 80987159 is about 432.6520057768.

The spelling of 80987159 in words is "eighty million, nine hundred eighty-seven thousand, one hundred fifty-nine".