904545 has 12 divisors (see below), whose sum is σ = 1567956. Its totient is φ = 482400.

The previous prime is 904531. The next prime is 904559. The reversal of 904545 is 545409.

It is an interprime number because it is at equal distance from previous prime (904531) and next prime (904559).

It can be written as a sum of positive squares in 2 ways, for example, as 314721 + 589824 = 561^2 + 768^2 .

It is not a de Polignac number, because 904545 - 2⁵ = 904513 is a prime.

904545 is a modest number, since divided by 4545 gives 90 as remainder.

It is a Curzon number.

904545 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10006 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (130663).

2⁹⁰⁴⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

904545 is a deficient number, since it is larger than the sum of its proper divisors (663411).

904545 is a wasteful number, since it uses less digits than its factorization.

904545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112 (or 20109 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 904545 is about 951.0757067658. The cubic root of 904545 is about 96.7111896898.

The spelling of 904545 in words is "nine hundred four thousand, five hundred forty-five".