445313 has 4 divisors (see below), whose sum is σ = 485808. Its totient is φ = 404820.

The previous prime is 445307. The next prime is 445321. The reversal of 445313 is 313544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445313 - 2⁴ = 445297 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445313.

It is not an unprimeable number, because it can be changed into a prime (445363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20231 + ... + 20252.

It is an arithmetic number, because the mean of its divisors is an integer number (121452).

2⁴⁴⁵³¹³ is an apocalyptic number.

It is an amenable number.

445313 is a deficient number, since it is larger than the sum of its proper divisors (40495).

445313 is a wasteful number, since it uses less digits than its factorization.

445313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40494.

The product of its digits is 720, while the sum is 20.

The square root of 445313 is about 667.3177653862. The cubic root of 445313 is about 76.3639628843.

Adding to 445313 its reverse (313544), we get a palindrome (758857).

Subtracting from 445313 its reverse (313544), we obtain a square (131769 = 363²).

The spelling of 445313 in words is "four hundred forty-five thousand, three hundred thirteen".