445532213 has 8 divisors (see below), whose sum is σ = 516155328. Its totient is φ = 376653024.

The previous prime is 445532189. The next prime is 445532221. The reversal of 445532213 is 312235544.

It is a happy number.

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-445532213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445532233) 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, 435431 + ... + 436452.

It is an arithmetic number, because the mean of its divisors is an integer number (64519416).

Almost surely, 2^445532213 is an apocalyptic number.

It is an amenable number.

445532213 is a deficient number, since it is larger than the sum of its proper divisors (70623115).

445532213 is an equidigital number, since it uses as much as digits as its factorization.

445532213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871963.

The product of its digits is 14400, while the sum is 29.

The square root of 445532213 is about 21107.6339981534. The cubic root of 445532213 is about 763.7649132104.

Adding to 445532213 its reverse (312235544), we get a palindrome (757767757).

The spelling of 445532213 in words is "four hundred forty-five million, five hundred thirty-two thousand, two hundred thirteen".