2541616221 has 8 divisors (see below), whose sum is σ = 3389069824. Its totient is φ = 1694286720.

The previous prime is 2541616201. The next prime is 2541616237. The reversal of 2541616221 is 1226161452.

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

It is not a de Polignac number, because 2541616221 - 2⁶ = 2541616157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541616201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39981 + ... + 81741.

It is an arithmetic number, because the mean of its divisors is an integer number (423633728).

Almost surely, 2^2541616221 is an apocalyptic number.

It is an amenable number.

2541616221 is a deficient number, since it is larger than the sum of its proper divisors (847453603).

2541616221 is a wasteful number, since it uses less digits than its factorization.

2541616221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62051.

The product of its digits is 5760, while the sum is 30.

The square root of 2541616221 is about 50414.4445670088. Note that the first 3 decimals coincide. The cubic root of 2541616221 is about 1364.6983229518.

Adding to 2541616221 its reverse (1226161452), we get a palindrome (3767777673).

The spelling of 2541616221 in words is "two billion, five hundred forty-one million, six hundred sixteen thousand, two hundred twenty-one".