54218784577 has 2 divisors, whose sum is σ = 54218784578. Its totient is φ = 54218784576.

The previous prime is 54218784559. The next prime is 54218784583. The reversal of 54218784577 is 77548781245.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33629691456 + 20589093121 = 183384^2 + 143489^2 .

It is a cyclic number.

It is not a de Polignac number, because 54218784577 - 2¹⁵ = 54218751809 is a prime.

It is not a weakly prime, because it can be changed into another prime (54218784677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27109392288 + 27109392289.

It is an arithmetic number, because the mean of its divisors is an integer number (27109392289).

Almost surely, 2^54218784577 is an apocalyptic number.

It is an amenable number.

54218784577 is a deficient number, since it is larger than the sum of its proper divisors (1).

54218784577 is an equidigital number, since it uses as much as digits as its factorization.

54218784577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17561600, while the sum is 58.

The spelling of 54218784577 in words is "fifty-four billion, two hundred eighteen million, seven hundred eighty-four thousand, five hundred seventy-seven".