57585221849 has 2 divisors, whose sum is σ = 57585221850. Its totient is φ = 57585221848.

The previous prime is 57585221833. The next prime is 57585221899. The reversal of 57585221849 is 94812258575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55864631449 + 1720590400 = 236357^2 + 41480^2 .

It is a cyclic number.

It is not a de Polignac number, because 57585221849 - 2⁴ = 57585221833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57585221794 and 57585221803.

It is not a weakly prime, because it can be changed into another prime (57585221809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28792610924 + 28792610925.

It is an arithmetic number, because the mean of its divisors is an integer number (28792610925).

Almost surely, 2^57585221849 is an apocalyptic number.

It is an amenable number.

57585221849 is a deficient number, since it is larger than the sum of its proper divisors (1).

57585221849 is an equidigital number, since it uses as much as digits as its factorization.

57585221849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064000, while the sum is 56.

The spelling of 57585221849 in words is "fifty-seven billion, five hundred eighty-five million, two hundred twenty-one thousand, eight hundred forty-nine".