54266715557 has 2 divisors, whose sum is σ = 54266715558. Its totient is φ = 54266715556.

The previous prime is 54266715533. The next prime is 54266715709. The reversal of 54266715557 is 75551766245.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45420560641 + 8846154916 = 213121^2 + 94054^2 .

It is a cyclic number.

It is not a de Polignac number, because 54266715557 - 2¹² = 54266711461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54266715499 and 54266715508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54266715457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27133357778 + 27133357779.

It is an arithmetic number, because the mean of its divisors is an integer number (27133357779).

Almost surely, 2^54266715557 is an apocalyptic number.

It is an amenable number.

54266715557 is a deficient number, since it is larger than the sum of its proper divisors (1).

54266715557 is an equidigital number, since it uses as much as digits as its factorization.

54266715557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820000, while the sum is 53.

The spelling of 54266715557 in words is "fifty-four billion, two hundred sixty-six million, seven hundred fifteen thousand, five hundred fifty-seven".