397161 has 6 divisors (see below), whose sum is σ = 573690. Its totient is φ = 264768.

The previous prime is 397153. The next prime is 397181. The reversal of 397161 is 161793.

It can be written as a sum of positive squares in only one way, i.e., 207936 + 189225 = 456^2 + 435^2 .

It is not a de Polignac number, because 397161 - 2³ = 397153 is a prime.

397161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (397151) 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, 22056 + ... + 22073.

It is an arithmetic number, because the mean of its divisors is an integer number (95615).

2³⁹⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

397161 is a deficient number, since it is larger than the sum of its proper divisors (176529).

397161 is a wasteful number, since it uses less digits than its factorization.

397161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135 (or 44132 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 397161 is about 630.2071088142. The cubic root of 397161 is about 73.5058998457.

The spelling of 397161 in words is "three hundred ninety-seven thousand, one hundred sixty-one".