4457545 has 4 divisors (see below), whose sum is σ = 5349060. Its totient is φ = 3566032.

The previous prime is 4457543. The next prime is 4457549. The reversal of 4457545 is 5457544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1042441 + 3415104 = 1021^2 + 1848^2 .

It is a cyclic number.

It is not a de Polignac number, because 4457545 - 2¹ = 4457543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4457545.

It is not an unprimeable number, because it can be changed into a prime (4457543) 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, 445750 + ... + 445759.

It is an arithmetic number, because the mean of its divisors is an integer number (1337265).

Almost surely, 2^4457545 is an apocalyptic number.

It is an amenable number.

4457545 is a deficient number, since it is larger than the sum of its proper divisors (891515).

4457545 is an equidigital number, since it uses as much as digits as its factorization.

4457545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891514.

The product of its digits is 56000, while the sum is 34.

The square root of 4457545 is about 2111.2898900909. The cubic root of 4457545 is about 164.5755235661.

Subtracting 4457545 from its reverse (5457544), we obtain a palindrome (999999).

The spelling of 4457545 in words is "four million, four hundred fifty-seven thousand, five hundred forty-five".