2541409 has 4 divisors (see below), whose sum is σ = 2736916. Its totient is φ = 2345904.

The previous prime is 2541401. The next prime is 2541433. The reversal of 2541409 is 9041452.

2541409 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 can be written as a sum of positive squares in 2 ways, for example, as 129600 + 2411809 = 360^2 + 1553^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541409 - 2³ = 2541401 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2541401) 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, 97734 + ... + 97759.

It is an arithmetic number, because the mean of its divisors is an integer number (684229).

2^2541409 is an apocalyptic number.

It is an amenable number.

2541409 is a deficient number, since it is larger than the sum of its proper divisors (195507).

2541409 is a wasteful number, since it uses less digits than its factorization.

2541409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195506.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2541409 is about 1594.1797263797. The cubic root of 2541409 is about 136.4661233450.

The spelling of 2541409 in words is "two million, five hundred forty-one thousand, four hundred nine".