6445050321 has 4 divisors (see below), whose sum is σ = 8593400432. Its totient is φ = 4296700212.

The previous prime is 6445050301. The next prime is 6445050323. The reversal of 6445050321 is 1230505446.

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 not a de Polignac number, because 6445050321 - 2⁵ = 6445050289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6445050323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074175051 + ... + 1074175056.

It is an arithmetic number, because the mean of its divisors is an integer number (2148350108).

Almost surely, 2^6445050321 is an apocalyptic number.

It is an amenable number.

6445050321 is a deficient number, since it is larger than the sum of its proper divisors (2148350111).

6445050321 is a wasteful number, since it uses less digits than its factorization.

6445050321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148350110.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 6445050321 is about 80281.0707514542. The cubic root of 6445050321 is about 1860.9817071660.

Adding to 6445050321 its reverse (1230505446), we get a palindrome (7675555767).

The spelling of 6445050321 in words is "six billion, four hundred forty-five million, fifty thousand, three hundred twenty-one".