445221545 has 8 divisors (see below), whose sum is σ = 540703296. Its totient is φ = 351885616.

The previous prime is 445221523. The next prime is 445221577. The reversal of 445221545 is 545122544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445221545 - 2¹⁴ = 445205161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535997 + ... + 536826.

It is an arithmetic number, because the mean of its divisors is an integer number (67587912).

Almost surely, 2^445221545 is an apocalyptic number.

It is an amenable number.

445221545 is a deficient number, since it is larger than the sum of its proper divisors (95481751).

445221545 is a wasteful number, since it uses less digits than its factorization.

445221545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072911.

The product of its digits is 32000, while the sum is 32.

The square root of 445221545 is about 21100.2735764255. The cubic root of 445221545 is about 763.5873484288.

Subtracting 445221545 from its reverse (545122544), we obtain a palindrome (99900999).

The spelling of 445221545 in words is "four hundred forty-five million, two hundred twenty-one thousand, five hundred forty-five".