315505 has 8 divisors (see below), whose sum is σ = 383400. Its totient is φ = 249216.

The previous prime is 315493. The next prime is 315517. The reversal of 315505 is 505513.

315505 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (315493) and next prime (315517).

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 314721 = 28^2 + 561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315505 - 2⁷ = 315377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (47925).

2³¹⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

315505 is a deficient number, since it is larger than the sum of its proper divisors (67895).

315505 is an equidigital number, since it uses as much as digits as its factorization.

315505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 315505 is about 561.6983176047. The cubic root of 315505 is about 68.0772622383.

It can be divided in two parts, 315 and 505, that added together give a triangular number (820 = T₄₀).

The spelling of 315505 in words is "three hundred fifteen thousand, five hundred five".