158545 has 8 divisors (see below), whose sum is σ = 195624. Its totient is φ = 123264.

The previous prime is 158537. The next prime is 158551. The reversal of 158545 is 545851.

158545 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 82369 + 76176 = 287^2 + 276^2 .

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 158545 - 2³ = 158537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244 + ... + 613.

It is an arithmetic number, because the mean of its divisors is an integer number (24453).

2¹⁵⁸⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

158545 is a deficient number, since it is larger than the sum of its proper divisors (37079).

158545 is an equidigital number, since it uses as much as digits as its factorization.

158545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its digits is 4000, while the sum is 28.

The square root of 158545 is about 398.1770962775. The cubic root of 158545 is about 54.1232894011.

It can be divided in two parts, 158 and 545, that added together give a triangular number (703 = T₃₇).

The spelling of 158545 in words is "one hundred fifty-eight thousand, five hundred forty-five".