2541611887 has 4 divisors (see below), whose sum is σ = 2541887656. Its totient is φ = 2541336120.

The previous prime is 2541611869. The next prime is 2541611899. The reversal of 2541611887 is 7881161452.

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 2541611887 - 2⁷ = 2541611759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541611857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123564 + ... + 142657.

It is an arithmetic number, because the mean of its divisors is an integer number (635471914).

Almost surely, 2^2541611887 is an apocalyptic number.

2541611887 is a deficient number, since it is larger than the sum of its proper divisors (275769).

2541611887 is an equidigital number, since it uses as much as digits as its factorization.

2541611887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275768.

The product of its digits is 107520, while the sum is 43.

The square root of 2541611887 is about 50414.4015832778. The cubic root of 2541611887 is about 1364.6975472504.

The spelling of 2541611887 in words is "two billion, five hundred forty-one million, six hundred eleven thousand, eight hundred eighty-seven".