445143 has 4 divisors (see below), whose sum is σ = 593528. Its totient is φ = 296760.

The previous prime is 445141. The next prime is 445157. The reversal of 445143 is 341544.

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

It is not a de Polignac number, because 445143 - 2¹ = 445141 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

445143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445141) 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, 74188 + ... + 74193.

It is an arithmetic number, because the mean of its divisors is an integer number (148382).

2⁴⁴⁵¹⁴³ is an apocalyptic number.

445143 is a deficient number, since it is larger than the sum of its proper divisors (148385).

445143 is a wasteful number, since it uses less digits than its factorization.

445143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148384.

The product of its digits is 960, while the sum is 21.

The square root of 445143 is about 667.1903776285. The cubic root of 445143 is about 76.3542442324.

Adding to 445143 its reverse (341544), we get a palindrome (786687).

The spelling of 445143 in words is "four hundred forty-five thousand, one hundred forty-three".