397155 has 32 divisors (see below), whose sum is σ = 725760. Its totient is φ = 183680.

The previous prime is 397153. The next prime is 397181. The reversal of 397155 is 551793.

It is a happy number.

It is not a de Polignac number, because 397155 - 2¹ = 397153 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 4744 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2³⁹⁷¹⁵⁵ is an apocalyptic number.

397155 is a deficient number, since it is larger than the sum of its proper divisors (328605).

397155 is a wasteful number, since it uses less digits than its factorization.

397155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131.

The product of its digits is 4725, while the sum is 30.

The square root of 397155 is about 630.2023484564. The cubic root of 397155 is about 73.5055296872.

The spelling of 397155 in words is "three hundred ninety-seven thousand, one hundred fifty-five".