315855 has 12 divisors (see below), whose sum is σ = 547560. Its totient is φ = 168432.
The previous prime is 315851. The next prime is 315857. The reversal of 315855 is 558513.
315855 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 315855 - 22 = 315851 is a prime.
315855 is strictly pandigital in base 7.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315855.
It is not an unprimeable number, because it can be changed into a prime (315851) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3465 + ... + 3554.
It is an arithmetic number, because the mean of its divisors is an integer number (45630).
2315855 is an apocalyptic number.
315855 is a deficient number, since it is larger than the sum of its proper divisors (231705).
315855 is a wasteful number, since it uses less digits than its factorization.
315855 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7030 (or 7027 counting only the distinct ones).
The product of its digits is 3000, while the sum is 27.
The square root of 315855 is about 562.0097863917. The cubic root of 315855 is about 68.1024263789.
It can be divided in two parts, 31 and 5855, that added together give a triangular number (5886 = T108).
The spelling of 315855 in words is "three hundred fifteen thousand, eight hundred fifty-five".
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