54453402352781 has 2 divisors, whose sum is σ = 54453402352782. Its totient is φ = 54453402352780.

The previous prime is 54453402352751. The next prime is 54453402352819. The reversal of 54453402352781 is 18725320435445.

It is a happy number.

54453402352781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44700710567881 + 9752691784900 = 6685859^2 + 3122930^2 .

It is a cyclic number.

It is not a de Polignac number, because 54453402352781 - 2²² = 54453398158477 is a prime.

It is a super-2 number, since 2×54453402352781² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54453402352711) 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, 27226701176390 + 27226701176391.

It is an arithmetic number, because the mean of its divisors is an integer number (27226701176391).

Almost surely, 2^{54453402352781} is an apocalyptic number.

It is an amenable number.

54453402352781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54453402352781 is an equidigital number, since it uses as much as digits as its factorization.

54453402352781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128000, while the sum is 53.

The spelling of 54453402352781 in words is "fifty-four trillion, four hundred fifty-three billion, four hundred two million, three hundred fifty-two thousand, seven hundred eighty-one".