2305305 has 12 divisors (see below), whose sum is σ = 3995940.
Its totient is φ = 1229472.
The previous prime is 2305301. The next prime is 2305321. The reversal of 2305305 is 5035032.
It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 1710864 = 771^2 + 1308^2
It is not a de Polignac number, because 2305305 - 22 = 2305301 is a prime.
It is a super-2 number, since 2×23053052 = 10628862286050, which contains 22 as substring.
It is a Curzon number.
2305305 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (2305301) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25570 + ... + 25659.
It is an arithmetic number, because the mean of its divisors is an integer number (332995).
22305305 is an apocalyptic number.
It is an amenable number.
2305305 is a deficient number, since it is larger than the sum of its proper divisors (1690635).
2305305 is a wasteful number, since it uses less digits than its factorization.
2305305 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 51240 (or 51237 counting only the distinct ones).
The product of its (nonzero) digits is 450, while the sum is 18.
The square root of 2305305 is about 1518.3230881469.
The cubic root of 2305305 is about 132.1020216790.
The spelling of 2305305 in words is "two million, three hundred five thousand, three hundred five".