2541815 has 4 divisors (see below), whose sum is σ = 3050184. Its totient is φ = 2033448.

The previous prime is 2541811. The next prime is 2541817. The reversal of 2541815 is 5181452.

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 2541815 - 2² = 2541811 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254177 + ... + 254186.

It is an arithmetic number, because the mean of its divisors is an integer number (762546).

2^2541815 is an apocalyptic number.

2541815 is a deficient number, since it is larger than the sum of its proper divisors (508369).

2541815 is an equidigital number, since it uses as much as digits as its factorization.

2541815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508368.

The product of its digits is 1600, while the sum is 26.

The square root of 2541815 is about 1594.3070595089. The cubic root of 2541815 is about 136.4733899566.

The spelling of 2541815 in words is "two million, five hundred forty-one thousand, eight hundred fifteen".