99988571 has 2 divisors, whose sum is σ = 99988572. Its totient is φ = 99988570.

The previous prime is 99988531. The next prime is 99988573. The reversal of 99988571 is 17588999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99988571 is a prime.

Together with 99988573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99988573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994285 + 49994286.

It is an arithmetic number, because the mean of its divisors is an integer number (49994286).

Almost surely, 2^99988571 is an apocalyptic number.

99988571 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988571 is an equidigital number, since it uses as much as digits as its factorization.

99988571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 56.

The square root of 99988571 is about 9999.4285336713. The cubic root of 99988571 is about 464.1411997813.

The spelling of 99988571 in words is "ninety-nine million, nine hundred eighty-eight thousand, five hundred seventy-one".