2541326521 has 8 divisors (see below), whose sum is σ = 2678563080. Its totient is φ = 2407396992.

The previous prime is 2541326503. The next prime is 2541326539. The reversal of 2541326521 is 1256231452.

It is an interprime number because it is at equal distance from previous prime (2541326503) and next prime (2541326539).

It can be written as a sum of positive squares in 4 ways, for example, as 153636025 + 2387690496 = 12395^2 + 48864^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2541326521 - 2⁹ = 2541326009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2541326621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825180 + ... + 828253.

It is an arithmetic number, because the mean of its divisors is an integer number (334820385).

Almost surely, 2^2541326521 is an apocalyptic number.

It is an amenable number.

2541326521 is a deficient number, since it is larger than the sum of its proper divisors (137236559).

2541326521 is a wasteful number, since it uses less digits than its factorization.

2541326521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653515.

The product of its digits is 14400, while the sum is 31.

The square root of 2541326521 is about 50411.5713006449. The cubic root of 2541326521 is about 1364.6464703651.

Adding to 2541326521 its reverse (1256231452), we get a palindrome (3797557973).

The spelling of 2541326521 in words is "two billion, five hundred forty-one million, three hundred twenty-six thousand, five hundred twenty-one".