158485 has 8 divisors (see below), whose sum is σ = 196920. Its totient is φ = 122304.

The previous prime is 158449. The next prime is 158489. The reversal of 158485 is 584851.

158485 = 281² + 282².

158485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60516 + 97969 = 246^2 + 313^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 158485 - 2⁷ = 158357 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158489) 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, 402 + ... + 691.

It is an arithmetic number, because the mean of its divisors is an integer number (24615).

2¹⁵⁸⁴⁸⁵ is an apocalyptic number.

158485 is the 282-nd centered square number.

It is an amenable number.

158485 is a deficient number, since it is larger than the sum of its proper divisors (38435).

158485 is a wasteful number, since it uses less digits than its factorization.

158485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

The product of its digits is 6400, while the sum is 31.

The square root of 158485 is about 398.1017457887. The cubic root of 158485 is about 54.1164610409.

The spelling of 158485 in words is "one hundred fifty-eight thousand, four hundred eighty-five".