215164 has 6 divisors (see below), whose sum is σ = 376544. Its totient is φ = 107580.

The previous prime is 215161. The next prime is 215179. The reversal of 215164 is 461512.

215164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26892 + ... + 26899.

2²¹⁵¹⁶⁴ is an apocalyptic number.

It is an amenable number.

215164 is a deficient number, since it is larger than the sum of its proper divisors (161380).

215164 is a wasteful number, since it uses less digits than its factorization.

215164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53795 (or 53793 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 215164 is about 463.8577368116. The cubic root of 215164 is about 59.9224925122.

Adding to 215164 its reverse (461512), we get a palindrome (676676).

The spelling of 215164 in words is "two hundred fifteen thousand, one hundred sixty-four".