215135 has 8 divisors (see below), whose sum is σ = 273456. Its totient is φ = 161920.

The previous prime is 215123. The next prime is 215141. The reversal of 215135 is 531512.

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

It is not a de Polignac number, because 215135 - 2¹² = 211039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

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, 1181 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (34182).

2²¹⁵¹³⁵ is an apocalyptic number.

215135 is a deficient number, since it is larger than the sum of its proper divisors (58321).

215135 is a wasteful number, since it uses less digits than its factorization.

215135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553.

The product of its digits is 150, while the sum is 17.

The square root of 215135 is about 463.8264761740. The cubic root of 215135 is about 59.9198002552.

Adding to 215135 its reverse (531512), we get a palindrome (746647).

The spelling of 215135 in words is "two hundred fifteen thousand, one hundred thirty-five".