57561005773 has 2 divisors, whose sum is σ = 57561005774. Its totient is φ = 57561005772.

The previous prime is 57561005759. The next prime is 57561005839. The reversal of 57561005773 is 37750016575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54152547849 + 3408457924 = 232707^2 + 58382^2 .

It is a cyclic number.

It is not a de Polignac number, because 57561005773 - 2⁹ = 57561005261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57561005713) 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, 28780502886 + 28780502887.

It is an arithmetic number, because the mean of its divisors is an integer number (28780502887).

Almost surely, 2^57561005773 is an apocalyptic number.

It is an amenable number.

57561005773 is a deficient number, since it is larger than the sum of its proper divisors (1).

57561005773 is an equidigital number, since it uses as much as digits as its factorization.

57561005773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 771750, while the sum is 46.

The spelling of 57561005773 in words is "fifty-seven billion, five hundred sixty-one million, five thousand, seven hundred seventy-three".