30517 has 2 divisors, whose sum is σ = 30518.
Its totient is φ = 30516.
The previous prime is 30509. The next prime is 30529. The reversal of 30517 is 71503.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 15876 + 14641 = 126^2 + 121^2
It is an emirp because it is prime and its reverse (71503) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30517 - 23 = 30509 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30517.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30557) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15258 + 15259.
It is an arithmetic number, because the mean of its divisors is an integer number (15259).
230517 is an apocalyptic number.
It is an amenable number.
30517 is a deficient number, since it is larger than the sum of its proper divisors (1).
30517 is an equidigital number, since it uses as much as digits as its factorization.
30517 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 105, while the sum is 16.
The square root of 30517 is about 174.6911560440.
The cubic root of 30517 is about 31.2498026654.
The spelling of 30517 in words is "thirty thousand, five hundred seventeen".