1804550 has 48 divisors (see below), whose sum is σ = 3897072. Its totient is φ = 614400.

The previous prime is 1804549. The next prime is 1804559. The reversal of 1804550 is 554081.

It is an Ulam 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 (1804559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9254 + ... + 9446.

It is an arithmetic number, because the mean of its divisors is an integer number (81189).

2^1804550 is an apocalyptic number.

1804550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1804550 is an abundant number, since it is smaller than the sum of its proper divisors (2092522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1804550 is a wasteful number, since it uses less digits than its factorization.

1804550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1804550 is about 1343.3354011564. The cubic root of 1804550 is about 121.7464500368.

The spelling of 1804550 in words is "one million, eight hundred four thousand, five hundred fifty".