215155 has 8 divisors (see below), whose sum is σ = 265392. Its totient is φ = 167328.

The previous prime is 215153. The next prime is 215161. The reversal of 215155 is 551512.

215155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 215155 - 2¹ = 215153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397 + ... + 766.

It is an arithmetic number, because the mean of its divisors is an integer number (33174).

2²¹⁵¹⁵⁵ is an apocalyptic number.

215155 is a deficient number, since it is larger than the sum of its proper divisors (50237).

215155 is a wasteful number, since it uses less digits than its factorization.

215155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its digits is 250, while the sum is 19.

The square root of 215155 is about 463.8480354599. The cubic root of 215155 is about 59.9216570100.

Adding to 215155 its reverse (551512), we get a palindrome (766667).

The spelling of 215155 in words is "two hundred fifteen thousand, one hundred fifty-five".