45447 has 4 divisors (see below), whose sum is σ = 60600. Its totient is φ = 30296.

The previous prime is 45439. The next prime is 45481. The reversal of 45447 is 74454.

45447 is nontrivially palindromic in base 5.

45447 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 45447 - 2³ = 45439 is a prime.

It is a D-number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45427) 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, 7572 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (15150).

2⁴⁵⁴⁴⁷ is an apocalyptic number.

45447 is a deficient number, since it is larger than the sum of its proper divisors (15153).

45447 is a wasteful number, since it uses less digits than its factorization.

45447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152.

The product of its digits is 2240, while the sum is 24.

The square root of 45447 is about 213.1830199617. The cubic root of 45447 is about 35.6863179137.

The spelling of 45447 in words is "forty-five thousand, four hundred forty-seven".