45445 has 8 divisors (see below), whose sum is σ = 55800. Its totient is φ = 35520.

The previous prime is 45439. The next prime is 45481. The reversal of 45445 is 54454.

It can be written as a sum of positive squares in 4 ways, for example, as 1764 + 43681 = 42^2 + 209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45445 - 2⁵ = 45413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (6975).

2⁴⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

45445 is a deficient number, since it is larger than the sum of its proper divisors (10355).

45445 is a wasteful number, since it uses less digits than its factorization.

45445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its digits is 1600, while the sum is 22.

The square root of 45445 is about 213.1783291050. The cubic root of 45445 is about 35.6857944198.

Adding to 45445 its reverse (54454), we get a palindrome (99899).

Subtracting 45445 from its reverse (54454), we obtain a palindrome (9009).

The spelling of 45445 in words is "forty-five thousand, four hundred forty-five".