218151 has 6 divisors (see below), whose sum is σ = 315120. Its totient is φ = 145428.

The previous prime is 218149. The next prime is 218171. The reversal of 218151 is 151812.

218151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218151 - 2¹ = 218149 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12111 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (52520).

2²¹⁸¹⁵¹ is an apocalyptic number.

218151 is a deficient number, since it is larger than the sum of its proper divisors (96969).

218151 is a wasteful number, since it uses less digits than its factorization.

218151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24245 (or 24242 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 218151 is about 467.0663764392. The cubic root of 218151 is about 60.1985091775.

Adding to 218151 its reverse (151812), we get a palindrome (369963).

It can be divided in two parts, 21 and 8151, that multiplied together give a palindrome (171171).

The spelling of 218151 in words is "two hundred eighteen thousand, one hundred fifty-one".