3221145445 has 32 divisors (see below), whose sum is σ = 4583916288. Its totient is φ = 2126850048.

The previous prime is 3221145359. The next prime is 3221145451. The reversal of 3221145445 is 5445411223.

It is a cyclic number.

It is not a de Polignac number, because 3221145445 - 2⁹ = 3221144933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112794 + ... + 138436.

It is an arithmetic number, because the mean of its divisors is an integer number (143247384).

Almost surely, 2^3221145445 is an apocalyptic number.

3221145445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3221145445 is a deficient number, since it is larger than the sum of its proper divisors (1362770843).

3221145445 is a wasteful number, since it uses less digits than its factorization.

3221145445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25789.

The product of its digits is 19200, while the sum is 31.

The square root of 3221145445 is about 56755.1358468994. The cubic root of 3221145445 is about 1476.8513296661.

Adding to 3221145445 its reverse (5445411223), we get a palindrome (8666556668).

The spelling of 3221145445 in words is "three billion, two hundred twenty-one million, one hundred forty-five thousand, four hundred forty-five".