445503223 has 16 divisors (see below), whose sum is σ = 493208352. Its totient is φ = 399040000.

The previous prime is 445503187. The next prime is 445503239. The reversal of 445503223 is 322305544.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445503223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445503191 and 445503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445503323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258003 + ... + 259723.

It is an arithmetic number, because the mean of its divisors is an integer number (30825522).

Almost surely, 2^445503223 is an apocalyptic number.

445503223 is a deficient number, since it is larger than the sum of its proper divisors (47705129).

445503223 is a wasteful number, since it uses less digits than its factorization.

445503223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066.

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

The square root of 445503223 is about 21106.9472686128. The cubic root of 445503223 is about 763.7483472365.

Adding to 445503223 its reverse (322305544), we get a palindrome (767808767).

The spelling of 445503223 in words is "four hundred forty-five million, five hundred three thousand, two hundred twenty-three".