5305504553521 has 2 divisors, whose sum is σ = 5305504553522. Its totient is φ = 5305504553520.

The previous prime is 5305504553519. The next prime is 5305504553593. The reversal of 5305504553521 is 1253554055035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3611276912896 + 1694227640625 = 1900336^2 + 1301625^2 .

It is a cyclic number.

It is not a de Polignac number, because 5305504553521 - 2¹ = 5305504553519 is a prime.

It is a super-3 number, since 3×5305504553521³ (a number of 39 digits) contains 333 as substring.

Together with 5305504553519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5305504559521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652752276760 + 2652752276761.

It is an arithmetic number, because the mean of its divisors is an integer number (2652752276761).

Almost surely, 2^{5305504553521} is an apocalyptic number.

It is an amenable number.

5305504553521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5305504553521 is an equidigital number, since it uses as much as digits as its factorization.

5305504553521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125000, while the sum is 43.

The spelling of 5305504553521 in words is "five trillion, three hundred five billion, five hundred four million, five hundred fifty-three thousand, five hundred twenty-one".