445164 has 12 divisors (see below), whose sum is σ = 1038744. Its totient is φ = 148384.

The previous prime is 445157. The next prime is 445169. The reversal of 445164 is 461544.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (445169) 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, 18537 + ... + 18560.

It is an arithmetic number, because the mean of its divisors is an integer number (86562).

2⁴⁴⁵¹⁶⁴ is an apocalyptic number.

It is an amenable number.

445164 is an abundant number, since it is smaller than the sum of its proper divisors (593580).

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

445164 is a wasteful number, since it uses less digits than its factorization.

445164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37104 (or 37102 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 445164 is about 667.2061150799. The cubic root of 445164 is about 76.3554449057.

The spelling of 445164 in words is "four hundred forty-five thousand, one hundred sixty-four".