6500057161 has 4 divisors (see below), whose sum is σ = 7000061572. Its totient is φ = 6000052752.

The previous prime is 6500057159. The next prime is 6500057227. The reversal of 6500057161 is 1617500056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 422919225 + 6077137936 = 20565^2 + 77956^2 .

It is a cyclic number.

It is not a de Polignac number, because 6500057161 - 2¹ = 6500057159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6500057261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250002186 + ... + 250002211.

It is an arithmetic number, because the mean of its divisors is an integer number (1750015393).

Almost surely, 2^6500057161 is an apocalyptic number.

It is an amenable number.

6500057161 is a deficient number, since it is larger than the sum of its proper divisors (500004411).

6500057161 is a wasteful number, since it uses less digits than its factorization.

6500057161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500004410.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 6500057161 is about 80622.9319796793. The cubic root of 6500057161 is about 1866.2610490098.

The spelling of 6500057161 in words is "six billion, five hundred million, fifty-seven thousand, one hundred sixty-one".