56521000465453 has 2 divisors, whose sum is σ = 56521000465454. Its totient is φ = 56521000465452.

The previous prime is 56521000465313. The next prime is 56521000465469. The reversal of 56521000465453 is 35456400012565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55450019711529 + 1070980753924 = 7446477^2 + 1034882^2 .

It is a cyclic number.

It is not a de Polignac number, because 56521000465453 - 2⁴⁵ = 21336628376621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56521000465753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28260500232726 + 28260500232727.

It is an arithmetic number, because the mean of its divisors is an integer number (28260500232727).

Almost surely, 2^{56521000465453} is an apocalyptic number.

It is an amenable number.

56521000465453 is a deficient number, since it is larger than the sum of its proper divisors (1).

56521000465453 is an equidigital number, since it uses as much as digits as its factorization.

56521000465453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 56521000465453 in words is "fifty-six trillion, five hundred twenty-one billion, four hundred sixty-five thousand, four hundred fifty-three".