999255071 has 2 divisors, whose sum is σ = 999255072. Its totient is φ = 999255070.

The previous prime is 999255067. The next prime is 999255073. The reversal of 999255071 is 170552999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999255071 - 2² = 999255067 is a prime.

Together with 999255073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999255073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499627535 + 499627536.

It is an arithmetic number, because the mean of its divisors is an integer number (499627536).

Almost surely, 2^999255071 is an apocalyptic number.

999255071 is a deficient number, since it is larger than the sum of its proper divisors (1).

999255071 is an equidigital number, since it uses as much as digits as its factorization.

999255071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 47.

The square root of 999255071 is about 31610.9960456801. The cubic root of 999255071 is about 999.7516286501.

The spelling of 999255071 in words is "nine hundred ninety-nine million, two hundred fifty-five thousand, seventy-one".