158445 has 24 divisors (see below), whose sum is σ = 314496. Its totient is φ = 72288.

The previous prime is 158443. The next prime is 158449. The reversal of 158445 is 544851.

It is not a de Polignac number, because 158445 - 2¹ = 158443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158443) 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 23 ways as a sum of consecutive naturals, for example, 64 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (13104).

2¹⁵⁸⁴⁴⁵ is an apocalyptic number.

158445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158445 is a deficient number, since it is larger than the sum of its proper divisors (156051).

158445 is a wasteful number, since it uses less digits than its factorization.

158445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 518 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 158445 is about 398.0515042052. The cubic root of 158445 is about 54.1119078433. Note that the first 3 decimals are identical.

The spelling of 158445 in words is "one hundred fifty-eight thousand, four hundred forty-five".