145045 has 4 divisors (see below), whose sum is σ = 174060. Its totient is φ = 116032.

The previous prime is 145043. The next prime is 145063. The reversal of 145045 is 540541.

145045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33489 + 111556 = 183^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 145045 - 2¹ = 145043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14500 + ... + 14509.

It is an arithmetic number, because the mean of its divisors is an integer number (43515).

2¹⁴⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

145045 is a deficient number, since it is larger than the sum of its proper divisors (29015).

145045 is an equidigital number, since it uses as much as digits as its factorization.

145045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29014.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 145045 is about 380.8477386043. The cubic root of 145045 is about 52.5413129089.

Adding to 145045 its reverse (540541), we get a palindrome (685586).

The spelling of 145045 in words is "one hundred forty-five thousand, forty-five".