158533 has 4 divisors (see below), whose sum is σ = 161280. Its totient is φ = 155788.

The previous prime is 158527. The next prime is 158537. The reversal of 158533 is 335851.

It is a happy number.

158533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335851 = 263 ⋅1277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158498 and 158507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158537) 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, 1285 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2¹⁵⁸⁵³³ is an apocalyptic number.

It is an amenable number.

158533 is a deficient number, since it is larger than the sum of its proper divisors (2747).

158533 is an equidigital number, since it uses as much as digits as its factorization.

158533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746.

The product of its digits is 1800, while the sum is 25.

The square root of 158533 is about 398.1620273205. The cubic root of 158533 is about 54.1219238669.

The spelling of 158533 in words is "one hundred fifty-eight thousand, five hundred thirty-three".