2540105 has 4 divisors (see below), whose sum is σ = 3048132. Its totient is φ = 2032080.

The previous prime is 2540099. The next prime is 2540113. The reversal of 2540105 is 5010452.

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 1882384 + 657721 = 1372^2 + 811^2 .

It is not a de Polignac number, because 2540105 - 2¹⁶ = 2474569 is a prime.

It is a super-2 number, since 2×2540105² = 12904266822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254006 + ... + 254015.

It is an arithmetic number, because the mean of its divisors is an integer number (762033).

2^2540105 is an apocalyptic number.

It is an amenable number.

2540105 is a deficient number, since it is larger than the sum of its proper divisors (508027).

2540105 is an equidigital number, since it uses as much as digits as its factorization.

2540105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508026.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2540105 is about 1593.7706861403. The cubic root of 2540105 is about 136.4427790415.

Adding to 2540105 its reverse (5010452), we get a palindrome (7550557).

The spelling of 2540105 in words is "two million, five hundred forty thousand, one hundred five".