445550 has 48 divisors (see below), whose sum is σ = 1011840. Its totient is φ = 142560.

The previous prime is 445541. The next prime is 445567. The reversal of 445550 is 55544.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

445550 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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6617 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (21080).

2⁴⁴⁵⁵⁵⁰ is an apocalyptic number.

445550 is an abundant number, since it is smaller than the sum of its proper divisors (566290).

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

445550 is a wasteful number, since it uses less digits than its factorization.

445550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 445550 is about 667.4953183356. The cubic root of 445550 is about 76.3775077014.

It can be divided in two parts, 4 and 45550, that added together give a palindrome (45554).

The spelling of 445550 in words is "four hundred forty-five thousand, five hundred fifty".