2540435 has 4 divisors (see below), whose sum is σ = 3048528. Its totient is φ = 2032344.

The previous prime is 2540431. The next prime is 2540441. The reversal of 2540435 is 5340452.

2540435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2540435 - 2² = 2540431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2540435.

It is not an unprimeable number, because it can be changed into a prime (2540431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254039 + ... + 254048.

It is an arithmetic number, because the mean of its divisors is an integer number (762132).

2^2540435 is an apocalyptic number.

2540435 is a deficient number, since it is larger than the sum of its proper divisors (508093).

2540435 is an equidigital number, since it uses as much as digits as its factorization.

2540435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508092.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2540435 is about 1593.8742108460. The cubic root of 2540435 is about 136.4486874806.

Adding to 2540435 its reverse (5340452), we get a palindrome (7880887).

The spelling of 2540435 in words is "two million, five hundred forty thousand, four hundred thirty-five".