445134221 has 8 divisors (see below), whose sum is σ = 509790720. Its totient is φ = 380744208.

The previous prime is 445134211. The next prime is 445134257. The reversal of 445134221 is 122431544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445134221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445134211) by changing a digit.

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, 63026 + ... + 69731.

It is an arithmetic number, because the mean of its divisors is an integer number (63723840).

Almost surely, 2^445134221 is an apocalyptic number.

It is an amenable number.

445134221 is a deficient number, since it is larger than the sum of its proper divisors (64656499).

445134221 is a wasteful number, since it uses less digits than its factorization.

445134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133243.

The product of its digits is 3840, while the sum is 26.

The square root of 445134221 is about 21098.2042126812. The cubic root of 445134221 is about 763.5374228264.

Adding to 445134221 its reverse (122431544), we get a palindrome (567565765).

The spelling of 445134221 in words is "four hundred forty-five million, one hundred thirty-four thousand, two hundred twenty-one".