45445423 has 4 divisors (see below), whose sum is σ = 45467928. Its totient is φ = 45422920.

The previous prime is 45445417. The next prime is 45445429. The reversal of 45445423 is 32454454.

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

It is an interprime number because it is at equal distance from previous prime (45445417) and next prime (45445429).

It is a cyclic number.

It is not a de Polignac number, because 45445423 - 2¹⁷ = 45314351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45445429) 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, 7888 + ... + 12373.

It is an arithmetic number, because the mean of its divisors is an integer number (11366982).

Almost surely, 2^45445423 is an apocalyptic number.

45445423 is a deficient number, since it is larger than the sum of its proper divisors (22505).

45445423 is a wasteful number, since it uses less digits than its factorization.

45445423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22504.

The product of its digits is 38400, while the sum is 31.

The square root of 45445423 is about 6741.3220513487. The cubic root of 45445423 is about 356.8590514004.

Adding to 45445423 its reverse (32454454), we get a palindrome (77899877).

The spelling of 45445423 in words is "forty-five million, four hundred forty-five thousand, four hundred twenty-three".