158933 has 4 divisors (see below), whose sum is σ = 168300. Its totient is φ = 149568.
The previous prime is 158927. The next prime is 158941. The reversal of 158933 is 339851.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 339851 = 29 ⋅11719.
It can be written as a sum of positive squares in 2 ways, for example, as 131044 + 27889 = 362^2 + 167^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-158933 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 158896 and 158905.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (158923) 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, 4658 + ... + 4691.
It is an arithmetic number, because the mean of its divisors is an integer number (42075).
2158933 is an apocalyptic number.
It is an amenable number.
158933 is a deficient number, since it is larger than the sum of its proper divisors (9367).
158933 is an equidigital number, since it uses as much as digits as its factorization.
158933 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9366.
The product of its digits is 3240, while the sum is 29.
The square root of 158933 is about 398.6640189433. The cubic root of 158933 is about 54.1674045922.
The spelling of 158933 in words is "one hundred fifty-eight thousand, nine hundred thirty-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.078 sec. • engine limits •