99927257 has 2 divisors, whose sum is σ = 99927258.
Its totient is φ = 99927256.
The previous prime is 99927221. The next prime is 99927263. The reversal of 99927257 is 75272999.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 59845696 + 40081561 = 7736^2 + 6331^2
It is an emirp because it is prime and its reverse (75272999) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 99927257 - 28 = 99927001 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (99927277) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49963628 + 49963629.
It is an arithmetic number, because the mean of its divisors is an integer number (49963629).
Almost surely, 299927257 is an apocalyptic number.
It is an amenable number.
99927257 is a deficient number, since it is larger than the sum of its proper divisors (1).
99927257 is an equidigital number, since it uses as much as digits as its factorization.
99927257 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 714420, while the sum is 50.
The square root of 99927257 is about 9996.3621883163.
The cubic root of 99927257 is about 464.0463083612.
The spelling of 99927257 in words is "ninety-nine million, nine hundred twenty-seven thousand, two hundred fifty-seven".