445021133 has 4 divisors (see below), whose sum is σ = 447751488. Its totient is φ = 442290780.

The previous prime is 445021123. The next prime is 445021139. The reversal of 445021133 is 331120544.

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 445021133 - 2⁴ = 445021117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445021099 and 445021108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445021139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364933 + ... + 1365258.

It is an arithmetic number, because the mean of its divisors is an integer number (111937872).

Almost surely, 2^445021133 is an apocalyptic number.

It is an amenable number.

445021133 is a deficient number, since it is larger than the sum of its proper divisors (2730355).

445021133 is a wasteful number, since it uses less digits than its factorization.

445021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730354.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 445021133 is about 21095.5240039208. The cubic root of 445021133 is about 763.4727575118.

Adding to 445021133 its reverse (331120544), we get a palindrome (776141677).

The spelling of 445021133 in words is "four hundred forty-five million, twenty-one thousand, one hundred thirty-three".