445518 has 24 divisors (see below), whose sum is σ = 985608. Its totient is φ = 145392.

The previous prime is 445507. The next prime is 445537. The reversal of 445518 is 815544.

445518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 445491 and 445500.

It is a congruent number.

It is an unprimeable number.

445518 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 721 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (41067).

2⁴⁴⁵⁵¹⁸ is an apocalyptic number.

445518 is an abundant number, since it is smaller than the sum of its proper divisors (540090).

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

445518 is a wasteful number, since it uses less digits than its factorization.

445518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 525 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 445518 is about 667.4713476997. The cubic root of 445518 is about 76.3756791459.

The spelling of 445518 in words is "four hundred forty-five thousand, five hundred eighteen".