158571 has 16 divisors (see below), whose sum is σ = 268800. Its totient is φ = 90504.

The previous prime is 158567. The next prime is 158573. The reversal of 158571 is 175851.

It is not a de Polignac number, because 158571 - 2² = 158567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

158571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (158573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231 + ... + 608.

It is an arithmetic number, because the mean of its divisors is an integer number (16800).

2¹⁵⁸⁵⁷¹ is an apocalyptic number.

158571 is a deficient number, since it is larger than the sum of its proper divisors (110229).

158571 is an equidigital number, since it uses as much as digits as its factorization.

158571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 849 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 158571 is about 398.2097437281. The cubic root of 158571 is about 54.1262478222.

It can be divided in two parts, 158 and 571, that added together give a 6-th power (729 = 3⁶).

The spelling of 158571 in words is "one hundred fifty-eight thousand, five hundred seventy-one".