54420977857 has 2 divisors, whose sum is σ = 54420977858. Its totient is φ = 54420977856.

The previous prime is 54420977851. The next prime is 54420977869. The reversal of 54420977857 is 75877902445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46877013121 + 7543964736 = 216511^2 + 86856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54420977857 is a prime.

It is not a weakly prime, because it can be changed into another prime (54420977851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210488928 + 27210488929.

It is an arithmetic number, because the mean of its divisors is an integer number (27210488929).

Almost surely, 2^54420977857 is an apocalyptic number.

It is an amenable number.

54420977857 is a deficient number, since it is larger than the sum of its proper divisors (1).

54420977857 is an equidigital number, since it uses as much as digits as its factorization.

54420977857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19756800, while the sum is 58.

The spelling of 54420977857 in words is "fifty-four billion, four hundred twenty million, nine hundred seventy-seven thousand, eight hundred fifty-seven".