158215 has 4 divisors (see below), whose sum is σ = 189864. Its totient is φ = 126568.

The previous prime is 158209. The next prime is 158227. The reversal of 158215 is 512851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512851 = 107 ⋅4793.

It is a cyclic number.

It is not a de Polignac number, because 158215 - 2¹⁷ = 27143 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 15817 + ... + 15826.

It is an arithmetic number, because the mean of its divisors is an integer number (47466).

2¹⁵⁸²¹⁵ is an apocalyptic number.

158215 is a deficient number, since it is larger than the sum of its proper divisors (31649).

158215 is an equidigital number, since it uses as much as digits as its factorization.

158215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31648.

The product of its digits is 400, while the sum is 22.

The square root of 158215 is about 397.7624919471. The cubic root of 158215 is about 54.0857120745.

It can be divided in two parts, 158 and 215, that added together give a palindrome (373).

The spelling of 158215 in words is "one hundred fifty-eight thousand, two hundred fifteen".