4085545 has 8 divisors (see below), whose sum is σ = 4958280. Its totient is φ = 3231360.

The previous prime is 4085539. The next prime is 4085561. The reversal of 4085545 is 5455804.

It can be written as a sum of positive squares in 4 ways, for example, as 212521 + 3873024 = 461^2 + 1968^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4085545 - 2³ = 4085537 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4146 + ... + 5035.

It is an arithmetic number, because the mean of its divisors is an integer number (619785).

Almost surely, 2^4085545 is an apocalyptic number.

It is an amenable number.

4085545 is a deficient number, since it is larger than the sum of its proper divisors (872735).

4085545 is an equidigital number, since it uses as much as digits as its factorization.

4085545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 4085545 is about 2021.2731136588. The cubic root of 4085545 is about 159.8637511971.

The spelling of 4085545 in words is "four million, eighty-five thousand, five hundred forty-five".