158505 has 8 divisors (see below), whose sum is σ = 253632. Its totient is φ = 84528.

The previous prime is 158489. The next prime is 158507. The reversal of 158505 is 505851.

158505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158505 - 2⁴ = 158489 is a prime.

It is a Curzon number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158505.

It is not an unprimeable number, because it can be changed into a prime (158507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269 + ... + 5298.

It is an arithmetic number, because the mean of its divisors is an integer number (31704).

2¹⁵⁸⁵⁰⁵ is an apocalyptic number.

158505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158505 is a deficient number, since it is larger than the sum of its proper divisors (95127).

158505 is a wasteful number, since it uses less digits than its factorization.

158505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10575.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 158505 is about 398.1268642029. The cubic root of 158505 is about 54.1187373525.

The spelling of 158505 in words is "one hundred fifty-eight thousand, five hundred five".