2541577541 has 6 divisors (see below), whose sum is σ = 2682385542. Its totient is φ = 2407809960.

The previous prime is 2541577523. The next prime is 2541577543. The reversal of 2541577541 is 1457751452.

It can be written as a sum of positive squares in only one way, i.e., 1692088225 + 849489316 = 41135^2 + 29146^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2541577541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541577543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3519830 + ... + 3520551.

It is an arithmetic number, because the mean of its divisors is an integer number (447064257).

Almost surely, 2^2541577541 is an apocalyptic number.

It is an amenable number.

2541577541 is a deficient number, since it is larger than the sum of its proper divisors (140808001).

2541577541 is an equidigital number, since it uses as much as digits as its factorization.

2541577541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040419 (or 7040400 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The square root of 2541577541 is about 50414.0609453355. The cubic root of 2541577541 is about 1364.6913999555.

The spelling of 2541577541 in words is "two billion, five hundred forty-one million, five hundred seventy-seven thousand, five hundred forty-one".