73091 has 2 divisors, whose sum is σ = 73092. Its totient is φ = 73090.
The previous prime is 73079. The next prime is 73121. The reversal of 73091 is 19037.
73091 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.
It is a weak prime.
It is an emirp because it is prime and its reverse (19037) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-73091 is a prime.
It is a Chen prime.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 73091.
It is not a weakly prime, because it can be changed into another prime (73061) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36545 + 36546.
It is an arithmetic number, because the mean of its divisors is an integer number (36546).
273091 is an apocalyptic number.
73091 is a deficient number, since it is larger than the sum of its proper divisors (1).
73091 is an equidigital number, since it uses as much as digits as its factorization.
73091 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 189, while the sum is 20.
The square root of 73091 is about 270.3534723284. The cubic root of 73091 is about 41.8107509567.
It can be divided in two parts, 730 and 91, that multiplied together give a triangular number (66430 = T364).
The spelling of 73091 in words is "seventy-three thousand, ninety-one".
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