445550423 has 4 divisors (see below), whose sum is σ = 445593240. Its totient is φ = 445507608.

The previous prime is 445550401. The next prime is 445550431. The reversal of 445550423 is 324055544.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 445550423 - 2²⁰ = 444501847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445550423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445550473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5348 + ... + 30326.

It is an arithmetic number, because the mean of its divisors is an integer number (111398310).

Almost surely, 2^445550423 is an apocalyptic number.

445550423 is a deficient number, since it is larger than the sum of its proper divisors (42817).

445550423 is a wasteful number, since it uses less digits than its factorization.

445550423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42816.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 445550423 is about 21108.0653542668. The cubic root of 445550423 is about 763.7753187203.

The spelling of 445550423 in words is "four hundred forty-five million, five hundred fifty thousand, four hundred twenty-three".