158565 has 24 divisors (see below), whose sum is σ = 285984. Its totient is φ = 74400.

The previous prime is 158563. The next prime is 158567. The reversal of 158565 is 565851.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (158563) and next prime (158567).

It is not a de Polignac number, because 158565 - 2¹ = 158563 is a prime.

Its product of digits (6000) is a multiple of the sum of its prime divisors (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5100 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (11916).

2¹⁵⁸⁵⁶⁵ is an apocalyptic number.

158565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158565 is a deficient number, since it is larger than the sum of its proper divisors (127419).

158565 is a wasteful number, since it uses less digits than its factorization.

158565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 50 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 158565 is about 398.2022099386. The cubic root of 158565 is about 54.1255651384.

The spelling of 158565 in words is "one hundred fifty-eight thousand, five hundred sixty-five".