99251071 has 2 divisors, whose sum is σ = 99251072. Its totient is φ = 99251070.

The previous prime is 99251069. The next prime is 99251077. The reversal of 99251071 is 17015299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99251071 - 2¹ = 99251069 is a prime.

Together with 99251069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99251077) 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, 49625535 + 49625536.

It is an arithmetic number, because the mean of its divisors is an integer number (49625536).

Almost surely, 2^99251071 is an apocalyptic number.

99251071 is a deficient number, since it is larger than the sum of its proper divisors (1).

99251071 is an equidigital number, since it uses as much as digits as its factorization.

99251071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 99251071 is about 9962.4831743898. The cubic root of 99251071 is about 462.9972383902.

The spelling of 99251071 in words is "ninety-nine million, two hundred fifty-one thousand, seventy-one".