158011 has 4 divisors (see below), whose sum is σ = 180592. Its totient is φ = 135432.

The previous prime is 158009. The next prime is 158017. The reversal of 158011 is 110851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110851 = 13 ⋅8527.

It is a cyclic number.

It is not a de Polignac number, because 158011 - 2¹ = 158009 is a prime.

It is a super-2 number, since 2×158011² = 49934952242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11280 + ... + 11293.

It is an arithmetic number, because the mean of its divisors is an integer number (45148).

2¹⁵⁸⁰¹¹ is an apocalyptic number.

158011 is the 230-th hex number.

158011 is a deficient number, since it is larger than the sum of its proper divisors (22581).

158011 is an equidigital number, since it uses as much as digits as its factorization.

158011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 158011 is about 397.5059747979. The cubic root of 158011 is about 54.0624563132.

Adding to 158011 its reverse (110851), we get a palindrome (268862).

The spelling of 158011 in words is "one hundred fifty-eight thousand, eleven".