2541817121 has 2 divisors, whose sum is σ = 2541817122. Its totient is φ = 2541817120.

The previous prime is 2541817081. The next prime is 2541817139. The reversal of 2541817121 is 1217181452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2224442896 + 317374225 = 47164^2 + 17815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2541817121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2541817921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270908560 + 1270908561.

It is an arithmetic number, because the mean of its divisors is an integer number (1270908561).

Almost surely, 2^2541817121 is an apocalyptic number.

It is an amenable number.

2541817121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541817121 is an equidigital number, since it uses as much as digits as its factorization.

2541817121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 32.

The square root of 2541817121 is about 50416.4370121491. The cubic root of 2541817121 is about 1364.7342791631.

Adding to 2541817121 its reverse (1217181452), we get a palindrome (3758998573).

The spelling of 2541817121 in words is "two billion, five hundred forty-one million, eight hundred seventeen thousand, one hundred twenty-one".