445401 has 18 divisors (see below), whose sum is σ = 708890. Its totient is φ = 269280.

The previous prime is 445363. The next prime is 445427. The reversal of 445401 is 104544.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 9801 = 660^2 + 99^2 .

It is not a de Polignac number, because 445401 - 2¹¹ = 443353 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

445401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (445001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 885 + ... + 1293.

2⁴⁴⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

445401 is a deficient number, since it is larger than the sum of its proper divisors (263489).

445401 is a wasteful number, since it uses less digits than its factorization.

445401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 445401 is about 667.3836977332. The cubic root of 445401 is about 76.3689927443.

Adding to 445401 its reverse (104544), we get a palindrome (549945).

It can be divided in two parts, 44 and 5401, that added together give a palindrome (5445).

The spelling of 445401 in words is "four hundred forty-five thousand, four hundred one".