904522 has 8 divisors (see below), whose sum is σ = 1360836. Its totient is φ = 450912.

The previous prime is 904517. The next prime is 904523. The reversal of 904522 is 225409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 904401 + 121 = 951^2 + 11^2 .

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 904493 and 904502.

It is not an unprimeable number, because it can be changed into a prime (904523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 868 + ... + 1600.

2⁹⁰⁴⁵²² is an apocalyptic number.

904522 is a deficient number, since it is larger than the sum of its proper divisors (456314).

904522 is a wasteful number, since it uses less digits than its factorization.

904522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 904522 is about 951.0636151173. The cubic root of 904522 is about 96.7103699863.

The spelling of 904522 in words is "nine hundred four thousand, five hundred twenty-two".