216158 has 4 divisors (see below), whose sum is σ = 324240. Its totient is φ = 108078.

The previous prime is 216157. The next prime is 216173. The reversal of 216158 is 851612.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a plaindrome in base 14.

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 216158.

It is not an unprimeable number, because it can be changed into a prime (216157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54038 + ... + 54041.

It is an arithmetic number, because the mean of its divisors is an integer number (81060).

2²¹⁶¹⁵⁸ is an apocalyptic number.

216158 is a deficient number, since it is larger than the sum of its proper divisors (108082).

216158 is a wasteful number, since it uses less digits than its factorization.

216158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108081.

The product of its digits is 480, while the sum is 23.

The square root of 216158 is about 464.9279514075. The cubic root of 216158 is about 60.0146260640.

The spelling of 216158 in words is "two hundred sixteen thousand, one hundred fifty-eight".