4457445 has 16 divisors (see below), whose sum is σ = 7378560. Its totient is φ = 2295104.

The previous prime is 4457437. The next prime is 4457447. The reversal of 4457445 is 5447544.

It is a cyclic number.

It is not a de Polignac number, because 4457445 - 2³ = 4457437 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4689 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^4457445 is an apocalyptic number.

It is an amenable number.

4457445 is a deficient number, since it is larger than the sum of its proper divisors (2921115).

4457445 is a wasteful number, since it uses less digits than its factorization.

4457445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10284.

The product of its digits is 44800, while the sum is 33.

The square root of 4457445 is about 2111.2662077531. The cubic root of 4457445 is about 164.5742928681.

Subtracting 4457445 from its reverse (5447544), we obtain a palindrome (990099).

The spelling of 4457445 in words is "four million, four hundred fifty-seven thousand, four hundred forty-five".