2540442511 has 4 divisors (see below), whose sum is σ = 2540802024. Its totient is φ = 2540083000.

The previous prime is 2540442497. The next prime is 2540442523. The reversal of 2540442511 is 1152440452.

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 2540442511 - 2⁹ = 2540441999 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 2540442511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540442581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168940 + ... + 183361.

It is an arithmetic number, because the mean of its divisors is an integer number (635200506).

Almost surely, 2^2540442511 is an apocalyptic number.

2540442511 is a deficient number, since it is larger than the sum of its proper divisors (359513).

2540442511 is an equidigital number, since it uses as much as digits as its factorization.

2540442511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359512.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 2540442511 is about 50402.8026105692. The cubic root of 2540442511 is about 1364.4882195431.

Adding to 2540442511 its reverse (1152440452), we get a palindrome (3692882963).

The spelling of 2540442511 in words is "two billion, five hundred forty million, four hundred forty-two thousand, five hundred eleven".