845550 has 36 divisors (see below), whose sum is σ = 2272920. Its totient is φ = 225360.

The previous prime is 845531. The next prime is 845567. The reversal of 845550 is 55548.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845550.

It is an unprimeable number.

845550 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 17 ways as a sum of consecutive naturals, for example, 490 + ... + 1389.

2⁸⁴⁵⁵⁵⁰ is an apocalyptic number.

845550 is an abundant number, since it is smaller than the sum of its proper divisors (1427370).

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

845550 is a wasteful number, since it uses less digits than its factorization.

845550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 845550 is about 919.5379274396. The cubic root of 845550 is about 94.5612268043.

The spelling of 845550 in words is "eight hundred forty-five thousand, five hundred fifty".