145003 has 4 divisors (see below), whose sum is σ = 148960. Its totient is φ = 141048.

The previous prime is 144983. The next prime is 145007. The reversal of 145003 is 300541.

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

It is a cyclic number.

It is not a de Polignac number, because 145003 - 2¹³ = 136811 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (145007) 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, 1923 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (37240).

2¹⁴⁵⁰⁰³ is an apocalyptic number.

145003 is a deficient number, since it is larger than the sum of its proper divisors (3957).

145003 is an equidigital number, since it uses as much as digits as its factorization.

145003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 145003 is about 380.7925944658. The cubic root of 145003 is about 52.5362410388.

Adding to 145003 its reverse (300541), we get a palindrome (445544).

The spelling of 145003 in words is "one hundred forty-five thousand, three".