987078523 has 2 divisors, whose sum is σ = 987078524. Its totient is φ = 987078522.

The previous prime is 987078517. The next prime is 987078527. The reversal of 987078523 is 325870789.

It is a strong prime.

It is an emirp because it is prime and its reverse (325870789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987078523 - 2⁹ = 987078011 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (987078527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493539261 + 493539262.

It is an arithmetic number, because the mean of its divisors is an integer number (493539262).

Almost surely, 2^987078523 is an apocalyptic number.

987078523 is a deficient number, since it is larger than the sum of its proper divisors (1).

987078523 is an equidigital number, since it uses as much as digits as its factorization.

987078523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 987078523 is about 31417.8058272694. The cubic root of 987078523 is about 995.6741550485.

The spelling of 987078523 in words is "nine hundred eighty-seven million, seventy-eight thousand, five hundred twenty-three".