445524223321 has 4 divisors (see below), whose sum is σ = 445537531152. Its totient is φ = 445510915492.

The previous prime is 445524223253. The next prime is 445524223343. The reversal of 445524223321 is 123322425544.

It is a happy number.

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 445524223321 - 2²⁹ = 444987352409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445524223351) 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, 6603571 + ... + 6670696.

It is an arithmetic number, because the mean of its divisors is an integer number (111384382788).

Almost surely, 2^445524223321 is an apocalyptic number.

It is an amenable number.

445524223321 is a deficient number, since it is larger than the sum of its proper divisors (13307831).

445524223321 is a wasteful number, since it uses less digits than its factorization.

445524223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13307830.

The product of its digits is 230400, while the sum is 37.

Adding to 445524223321 its reverse (123322425544), we get a palindrome (568846648865).

The spelling of 445524223321 in words is "four hundred forty-five billion, five hundred twenty-four million, two hundred twenty-three thousand, three hundred twenty-one".