4557985 has 4 divisors (see below), whose sum is σ = 5469588. Its totient is φ = 3646384.

The previous prime is 4557983. The next prime is 4557997. The reversal of 4557985 is 5897554.

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 1274641 + 3283344 = 1129^2 + 1812^2 .

It is a cyclic number.

It is not a de Polignac number, because 4557985 - 2¹ = 4557983 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4557983) 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, 455794 + ... + 455803.

It is an arithmetic number, because the mean of its divisors is an integer number (1367397).

Almost surely, 2^4557985 is an apocalyptic number.

It is an amenable number.

4557985 is a deficient number, since it is larger than the sum of its proper divisors (911603).

4557985 is an equidigital number, since it uses as much as digits as its factorization.

4557985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911602.

The product of its digits is 252000, while the sum is 43.

The square root of 4557985 is about 2134.9437931711. The cubic root of 4557985 is about 165.8024577137.

The spelling of 4557985 in words is "four million, five hundred fifty-seven thousand, nine hundred eighty-five".