54576057528781 has 2 divisors, whose sum is σ = 54576057528782. Its totient is φ = 54576057528780.

The previous prime is 54576057528697. The next prime is 54576057528799. The reversal of 54576057528781 is 18782575067545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40067317515625 + 14508740013156 = 6329875^2 + 3809034^2 .

It is a cyclic number.

It is not a de Polignac number, because 54576057528781 - 2¹⁵ = 54576057496013 is a prime.

It is a super-2 number, since 2×54576057528781² (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 54576057528781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54576057529781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27288028764390 + 27288028764391.

It is an arithmetic number, because the mean of its divisors is an integer number (27288028764391).

Almost surely, 2^{54576057528781} is an apocalyptic number.

It is an amenable number.

54576057528781 is a deficient number, since it is larger than the sum of its proper divisors (1).

54576057528781 is an equidigital number, since it uses as much as digits as its factorization.

54576057528781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 658560000, while the sum is 70.

The spelling of 54576057528781 in words is "fifty-four trillion, five hundred seventy-six billion, fifty-seven million, five hundred twenty-eight thousand, seven hundred eighty-one".