987255187 has 2 divisors, whose sum is σ = 987255188. Its totient is φ = 987255186.

The previous prime is 987255167. The next prime is 987255209. The reversal of 987255187 is 781552789.

It is a happy number.

987255187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987255187 is a prime.

It is not a weakly prime, because it can be changed into another prime (987255107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493627593 + 493627594.

It is an arithmetic number, because the mean of its divisors is an integer number (493627594).

Almost surely, 2^987255187 is an apocalyptic number.

987255187 is a deficient number, since it is larger than the sum of its proper divisors (1).

987255187 is an equidigital number, since it uses as much as digits as its factorization.

987255187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 52.

The square root of 987255187 is about 31420.6172281832. The cubic root of 987255187 is about 995.7335523109.

The spelling of 987255187 in words is "nine hundred eighty-seven million, two hundred fifty-five thousand, one hundred eighty-seven".