90271 has 2 divisors, whose sum is σ = 90272.
Its totient is φ = 90270.
The previous prime is 90263. The next prime is 90281. The reversal of 90271 is 17209.
It can be divided in two parts, 90 and 271, that added together give a square (361 = 192).
It is a weak prime.
It is an emirp because it is prime and its reverse (17209) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 90271 - 23 = 90263 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (90281) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45135 + 45136.
It is an arithmetic number, because the mean of its divisors is an integer number (45136).
290271 is an apocalyptic number.
90271 is a deficient number, since it is larger than the sum of its proper divisors (1).
90271 is an equidigital number, since it uses as much as digits as its factorization.
90271 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 126, while the sum is 19.
The square root of 90271 is about 300.4513271730.
The cubic root of 90271 is about 44.8589824197.
The spelling of 90271 in words is "ninety thousand, two hundred seventy-one".