2541405 has 8 divisors (see below), whose sum is σ = 4066272. Its totient is φ = 1355408.

The previous prime is 2541401. The next prime is 2541433. The reversal of 2541405 is 5041452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2541405 - 2² = 2541401 is a prime.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84699 + ... + 84728.

It is an arithmetic number, because the mean of its divisors is an integer number (508284).

2^2541405 is an apocalyptic number.

It is an amenable number.

2541405 is a deficient number, since it is larger than the sum of its proper divisors (1524867).

2541405 is a wasteful number, since it uses less digits than its factorization.

2541405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169435.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2541405 is about 1594.1784718155. The cubic root of 2541405 is about 136.4660517489.

Adding to 2541405 its reverse (5041452), we get a palindrome (7582857).

The spelling of 2541405 in words is "two million, five hundred forty-one thousand, four hundred five".