2542007521 has 2 divisors, whose sum is σ = 2542007522. Its totient is φ = 2542007520.

The previous prime is 2542007477. The next prime is 2542007561. The reversal of 2542007521 is 1257002452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1731808225 + 810199296 = 41615^2 + 28464^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542007521 - 2¹³ = 2541999329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2542007521.

It is not a weakly prime, because it can be changed into another prime (2542007561) 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 as a sum of consecutive naturals, namely, 1271003760 + 1271003761.

It is an arithmetic number, because the mean of its divisors is an integer number (1271003761).

Almost surely, 2^2542007521 is an apocalyptic number.

It is an amenable number.

2542007521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542007521 is an equidigital number, since it uses as much as digits as its factorization.

2542007521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2542007521 is about 50418.3252498534. The cubic root of 2542007521 is about 1364.7683543812.

Adding to 2542007521 its reverse (1257002452), we get a palindrome (3799009973).

The spelling of 2542007521 in words is "two billion, five hundred forty-two million, seven thousand, five hundred twenty-one".