2541455491 has 2 divisors, whose sum is σ = 2541455492. Its totient is φ = 2541455490.

The previous prime is 2541455489. The next prime is 2541455557. The reversal of 2541455491 is 1945541452.

2541455491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2541455491 - 2¹ = 2541455489 is a prime.

Together with 2541455489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2541455461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270727745 + 1270727746.

It is an arithmetic number, because the mean of its divisors is an integer number (1270727746).

Almost surely, 2^2541455491 is an apocalyptic number.

2541455491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541455491 is an equidigital number, since it uses as much as digits as its factorization.

2541455491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 40.

The square root of 2541455491 is about 50412.8504550179. The cubic root of 2541455491 is about 1364.6695548286.

The spelling of 2541455491 in words is "two billion, five hundred forty-one million, four hundred fifty-five thousand, four hundred ninety-one".