54554042436521 has 2 divisors, whose sum is σ = 54554042436522. Its totient is φ = 54554042436520.

The previous prime is 54554042436463. The next prime is 54554042436533. The reversal of 54554042436521 is 12563424045545.

54554042436521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43346277596521 + 11207764840000 = 6583789^2 + 3347800^2 .

It is a cyclic number.

It is not a de Polignac number, because 54554042436521 - 2³⁴ = 54536862567337 is a prime.

It is a super-2 number, since 2×54554042436521² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54554042436521.

It is not a weakly prime, because it can be changed into another prime (54554042436541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27277021218260 + 27277021218261.

It is an arithmetic number, because the mean of its divisors is an integer number (27277021218261).

Almost surely, 2^{54554042436521} is an apocalyptic number.

It is an amenable number.

54554042436521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54554042436521 is an equidigital number, since it uses as much as digits as its factorization.

54554042436521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520000, while the sum is 50.

The spelling of 54554042436521 in words is "fifty-four trillion, five hundred fifty-four billion, forty-two million, four hundred thirty-six thousand, five hundred twenty-one".