2150305 has 4 divisors (see below), whose sum is σ = 2580372. Its totient is φ = 1720240.

The previous prime is 2150303. The next prime is 2150333. The reversal of 2150305 is 5030512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 1760929 = 624^2 + 1327^2 .

It is not a de Polignac number, because 2150305 - 2¹ = 2150303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215026 + ... + 215035.

It is an arithmetic number, because the mean of its divisors is an integer number (645093).

2^2150305 is an apocalyptic number.

It is an amenable number.

2150305 is a deficient number, since it is larger than the sum of its proper divisors (430067).

2150305 is an equidigital number, since it uses as much as digits as its factorization.

2150305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430066.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 2150305 is about 1466.3918303100. The cubic root of 2150305 is about 129.0723909134.

Adding to 2150305 its reverse (5030512), we get a palindrome (7180817).

The spelling of 2150305 in words is "two million, one hundred fifty thousand, three hundred five".