54020511481 has 2 divisors, whose sum is σ = 54020511482. Its totient is φ = 54020511480.

The previous prime is 54020511421. The next prime is 54020511547. The reversal of 54020511481 is 18411502045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54007436025 + 13075456 = 232395^2 + 3616^2 .

It is a cyclic number.

It is not a de Polignac number, because 54020511481 - 2¹⁵ = 54020478713 is a prime.

It is a super-2 number, since 2×54020511481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54020511421) 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, 27010255740 + 27010255741.

It is an arithmetic number, because the mean of its divisors is an integer number (27010255741).

Almost surely, 2^54020511481 is an apocalyptic number.

It is an amenable number.

54020511481 is a deficient number, since it is larger than the sum of its proper divisors (1).

54020511481 is an equidigital number, since it uses as much as digits as its factorization.

54020511481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 31.

The spelling of 54020511481 in words is "fifty-four billion, twenty million, five hundred eleven thousand, four hundred eighty-one".