204973 has 2 divisors, whose sum is σ = 204974.
Its totient is φ = 204972.
The previous prime is 204947. The next prime is 204979. The reversal of 204973 is 379402.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 145924 + 59049 = 382^2 + 243^2
It is a cyclic number.
It is not a de Polignac number, because 204973 - 29 = 204461 is a prime.
It is a plaindrome in base 11.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (204979) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102486 + 102487.
It is an arithmetic number, because the mean of its divisors is an integer number (102487).
2204973 is an apocalyptic number.
It is an amenable number.
204973 is a deficient number, since it is larger than the sum of its proper divisors (1).
204973 is an equidigital number, since it uses as much as digits as its factorization.
204973 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1512, while the sum is 25.
The square root of 204973 is about 452.7394394130.
The cubic root of 204973 is about 58.9610966364.
The spelling of 204973 in words is "two hundred four thousand, nine hundred seventy-three".