2541297729 has 4 divisors (see below), whose sum is σ = 3388396976. Its totient is φ = 1694198484.

The previous prime is 2541297697. The next prime is 2541297797. The reversal of 2541297729 is 9277921452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2541297729 - 2⁵ = 2541297697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2541297799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423549619 + ... + 423549624.

It is an arithmetic number, because the mean of its divisors is an integer number (847099244).

Almost surely, 2^2541297729 is an apocalyptic number.

It is an amenable number.

2541297729 is a deficient number, since it is larger than the sum of its proper divisors (847099247).

2541297729 is an equidigital number, since it uses as much as digits as its factorization.

2541297729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847099246.

The product of its digits is 635040, while the sum is 48.

The square root of 2541297729 is about 50411.2857304790. The cubic root of 2541297729 is about 1364.6413167509.

The spelling of 2541297729 in words is "two billion, five hundred forty-one million, two hundred ninety-seven thousand, seven hundred twenty-nine".