7057161 has 6 divisors (see below), whose sum is σ = 10193690. Its totient is φ = 4704768.

The previous prime is 7057157. The next prime is 7057201. The reversal of 7057161 is 1617507.

It can be written as a sum of positive squares in only one way, i.e., 6471936 + 585225 = 2544^2 + 765^2 .

It is not a de Polignac number, because 7057161 - 2² = 7057157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7057361) 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 5 ways as a sum of consecutive naturals, for example, 392056 + ... + 392073.

Almost surely, 2^7057161 is an apocalyptic number.

It is an amenable number.

7057161 is a deficient number, since it is larger than the sum of its proper divisors (3136529).

7057161 is a wasteful number, since it uses less digits than its factorization.

7057161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784135 (or 784132 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 7057161 is about 2656.5317615267. The cubic root of 7057161 is about 191.8123981354.

The spelling of 7057161 in words is "seven million, fifty-seven thousand, one hundred sixty-one".