445521212 has 12 divisors (see below), whose sum is σ = 804812736. Its totient is φ = 215574720.

The previous prime is 445521203. The next prime is 445521239. The reversal of 445521212 is 212125544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796333 + ... + 1796580.

It is an arithmetic number, because the mean of its divisors is an integer number (67067728).

Almost surely, 2^445521212 is an apocalyptic number.

It is an amenable number.

445521212 is a deficient number, since it is larger than the sum of its proper divisors (359291524).

445521212 is a wasteful number, since it uses less digits than its factorization.

445521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592948 (or 3592946 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 445521212 is about 21107.3734036237. The cubic root of 445521212 is about 763.7586269108.

Adding to 445521212 its reverse (212125544), we get a palindrome (657646756).

The spelling of 445521212 in words is "four hundred forty-five million, five hundred twenty-one thousand, two hundred twelve".