904541 has 4 divisors (see below), whose sum is σ = 986784. Its totient is φ = 822300.

The previous prime is 904531. The next prime is 904559. The reversal of 904541 is 145409.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145409 = 11 ⋅13219.

It is a cyclic number.

It is not a de Polignac number, because 904541 - 2¹⁴ = 888157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41105 + ... + 41126.

It is an arithmetic number, because the mean of its divisors is an integer number (246696).

2⁹⁰⁴⁵⁴¹ is an apocalyptic number.

It is an amenable number.

904541 is a deficient number, since it is larger than the sum of its proper divisors (82243).

904541 is a wasteful number, since it uses less digits than its factorization.

904541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82242.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 904541 is about 951.0736038814. The cubic root of 904541 is about 96.7110471337.

The spelling of 904541 in words is "nine hundred four thousand, five hundred forty-one".