2509105 has 4 divisors (see below), whose sum is σ = 3010932. Its totient is φ = 2007280.

The previous prime is 2509103. The next prime is 2509123. The reversal of 2509105 is 5019052.

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 913936 + 1595169 = 956^2 + 1263^2 .

It is not a de Polignac number, because 2509105 - 2¹ = 2509103 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2509103) 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, 250906 + ... + 250915.

It is an arithmetic number, because the mean of its divisors is an integer number (752733).

2^2509105 is an apocalyptic number.

It is an amenable number.

2509105 is a deficient number, since it is larger than the sum of its proper divisors (501827).

2509105 is an equidigital number, since it uses as much as digits as its factorization.

2509105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501826.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2509105 is about 1584.0154670962. The cubic root of 2509105 is about 135.8854463579.

The spelling of 2509105 in words is "two million, five hundred nine thousand, one hundred five".