315155 has 4 divisors (see below), whose sum is σ = 378192. Its totient is φ = 252120.

The previous prime is 315127. The next prime is 315179. The reversal of 315155 is 551513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551513 = 19 ⋅29027.

It is a de Polignac number, because none of the positive numbers 2^k-315155 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31511 + ... + 31520.

It is an arithmetic number, because the mean of its divisors is an integer number (94548).

2³¹⁵¹⁵⁵ is an apocalyptic number.

315155 is a deficient number, since it is larger than the sum of its proper divisors (63037).

315155 is an equidigital number, since it uses as much as digits as its factorization.

315155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63036.

The product of its digits is 375, while the sum is 20.

The square root of 315155 is about 561.3866760086. The cubic root of 315155 is about 68.0520794806.

Adding to 315155 its reverse (551513), we get a palindrome (866668).

The spelling of 315155 in words is "three hundred fifteen thousand, one hundred fifty-five".