4457385 has 12 divisors (see below), whose sum is σ = 7726212. Its totient is φ = 2377248.

The previous prime is 4457371. The next prime is 4457389. The reversal of 4457385 is 5837544.

4457385 is a `hidden beast` number, since 4 + 4 + 573 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 3956121 = 708^2 + 1989^2 .

It is not a de Polignac number, because 4457385 - 2⁸ = 4457129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49482 + ... + 49571.

It is an arithmetic number, because the mean of its divisors is an integer number (643851).

Almost surely, 2^4457385 is an apocalyptic number.

4457385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4457385 is a deficient number, since it is larger than the sum of its proper divisors (3268827).

4457385 is a wasteful number, since it uses less digits than its factorization.

4457385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99064 (or 99061 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 4457385 is about 2111.2519982229. The cubic root of 4457385 is about 164.5735544404.

The spelling of 4457385 in words is "four million, four hundred fifty-seven thousand, three hundred eighty-five".