445305223 has 32 divisors (see below), whose sum is σ = 528756480. Its totient is φ = 370656000.

The previous prime is 445305197. The next prime is 445305227. The reversal of 445305223 is 322503544.

It is not a de Polignac number, because 445305223 - 2²⁵ = 411750791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445305191 and 445305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445305227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1345168 + ... + 1345498.

It is an arithmetic number, because the mean of its divisors is an integer number (16523640).

Almost surely, 2^445305223 is an apocalyptic number.

445305223 is a deficient number, since it is larger than the sum of its proper divisors (83451257).

445305223 is a wasteful number, since it uses less digits than its factorization.

445305223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 445305223 is about 21102.2563485519. The cubic root of 445305223 is about 763.6351833852.

Adding to 445305223 its reverse (322503544), we get a palindrome (767808767).

The spelling of 445305223 in words is "four hundred forty-five million, three hundred five thousand, two hundred twenty-three".