3221528085 has 32 divisors (see below), whose sum is σ = 5807842560. Its totient is φ = 1693944000.

The previous prime is 3221528081. The next prime is 3221528111. The reversal of 3221528085 is 5808251223.

3221528085 is a `hidden beast` number, since 32 + 21 + 528 + 0 + 85 = 666.

It is not a de Polignac number, because 3221528085 - 2² = 3221528081 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221528081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158466 + ... + 177635.

It is an arithmetic number, because the mean of its divisors is an integer number (181495080).

Almost surely, 2^3221528085 is an apocalyptic number.

It is an amenable number.

3221528085 is a deficient number, since it is larger than the sum of its proper divisors (2586314475).

3221528085 is a wasteful number, since it uses less digits than its factorization.

3221528085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336186 (or 336180 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 3221528085 is about 56758.5067192575. The cubic root of 3221528085 is about 1476.9098057608.

The spelling of 3221528085 in words is "three billion, two hundred twenty-one million, five hundred twenty-eight thousand, eighty-five".