2541540321 has 20 divisors (see below), whose sum is σ = 3800197632. Its totient is φ = 1692764568.

The previous prime is 2541540289. The next prime is 2541540329. The reversal of 2541540321 is 1230451452.

2541540321 is a `hidden beast` number, since 254 + 1 + 5 + 403 + 2 + 1 = 666.

It is not a de Polignac number, because 2541540321 - 2⁵ = 2541540289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2541540329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75120 + ... + 103566.

Almost surely, 2^2541540321 is an apocalyptic number.

It is an amenable number.

2541540321 is a deficient number, since it is larger than the sum of its proper divisors (1258657311).

2541540321 is a wasteful number, since it uses less digits than its factorization.

2541540321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29562 (or 29553 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2541540321 is about 50413.6918009384. The cubic root of 2541540321 is about 1364.6847382056.

Adding to 2541540321 its reverse (1230451452), we get a palindrome (3771991773).

The spelling of 2541540321 in words is "two billion, five hundred forty-one million, five hundred forty thousand, three hundred twenty-one".