158611 has 2 divisors, whose sum is σ = 158612. Its totient is φ = 158610.

The previous prime is 158597. The next prime is 158617. The reversal of 158611 is 116851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158611 - 2¹⁷ = 27539 is a prime.

It is not a weakly prime, because it can be changed into another prime (158617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79305 + 79306.

It is an arithmetic number, because the mean of its divisors is an integer number (79306).

2¹⁵⁸⁶¹¹ is an apocalyptic number.

158611 is a deficient number, since it is larger than the sum of its proper divisors (1).

158611 is an equidigital number, since it uses as much as digits as its factorization.

158611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 22.

The square root of 158611 is about 398.2599653493. The cubic root of 158611 is about 54.1307986079.

Adding to 158611 its product of digits (240), we get a palindrome (158851).

The spelling of 158611 in words is "one hundred fifty-eight thousand, six hundred eleven".