7166161 has 6 divisors (see below), whose sum is σ = 7422662. Its totient is φ = 6918240.

The previous prime is 7166153. The next prime is 7166167. The reversal of 7166161 is 1616617.

It can be written as a sum of positive squares in 3 ways, for example, as 1134225 + 6031936 = 1065^2 + 2456^2 .

It is not a de Polignac number, because 7166161 - 2³ = 7166153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7166167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3420 + ... + 5101.

Almost surely, 2^7166161 is an apocalyptic number.

It is an amenable number.

7166161 is a deficient number, since it is larger than the sum of its proper divisors (256501).

7166161 is an equidigital number, since it uses as much as digits as its factorization.

7166161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579 (or 8550 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 7166161 is about 2676.9686214074. The cubic root of 7166161 is about 192.7948906924.

It can be divided in two parts, 716616 and 1, that added together give a palindrome (716617).

The spelling of 7166161 in words is "seven million, one hundred sixty-six thousand, one hundred sixty-one".