149445 has 28 divisors (see below), whose sum is σ = 275436. Its totient is φ = 77760.

The previous prime is 149441. The next prime is 149459. The reversal of 149445 is 544941.

149445 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 2 ways, for example, as 26244 + 123201 = 162^2 + 351^2 .

It is not a de Polignac number, because 149445 - 2² = 149441 is a prime.

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

Its product of digits (2880) is a multiple of the sum of its prime factors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149441) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3625 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (9837).

2¹⁴⁹⁴⁴⁵ is an apocalyptic number.

149445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149445 is a deficient number, since it is larger than the sum of its proper divisors (125991).

149445 is an frugal number, since it uses more digits than its factorization.

149445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 49 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 149445 is about 386.5811687085. The cubic root of 149445 is about 53.0673168597.

The spelling of 149445 in words is "one hundred forty-nine thousand, four hundred forty-five".