2521315547 has 2 divisors, whose sum is σ = 2521315548. Its totient is φ = 2521315546.

The previous prime is 2521315483. The next prime is 2521315549. The reversal of 2521315547 is 7455131252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521315547 - 2⁶ = 2521315483 is a prime.

Together with 2521315549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2521315549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260657773 + 1260657774.

It is an arithmetic number, because the mean of its divisors is an integer number (1260657774).

Almost surely, 2^2521315547 is an apocalyptic number.

2521315547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521315547 is an equidigital number, since it uses as much as digits as its factorization.

2521315547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 35.

The square root of 2521315547 is about 50212.7030441501. The cubic root of 2521315547 is about 1361.0551836617.

Adding to 2521315547 its reverse (7455131252), we get a palindrome (9976446799).

The spelling of 2521315547 in words is "two billion, five hundred twenty-one million, three hundred fifteen thousand, five hundred forty-seven".