2975647221 has 12 divisors (see below), whose sum is σ = 4389607872. Its totient is φ = 1941556776.

The previous prime is 2975647217. The next prime is 2975647253. The reversal of 2975647221 is 1227465792.

It is not a de Polignac number, because 2975647221 - 2² = 2975647217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2975647021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3516891 + ... + 3517736.

It is an arithmetic number, because the mean of its divisors is an integer number (365800656).

Almost surely, 2^2975647221 is an apocalyptic number.

It is an amenable number.

2975647221 is a deficient number, since it is larger than the sum of its proper divisors (1413960651).

2975647221 is a wasteful number, since it uses less digits than its factorization.

2975647221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034680 (or 7034677 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 2975647221 is about 54549.4933157037. The cubic root of 2975647221 is about 1438.3364310329.

The spelling of 2975647221 in words is "two billion, nine hundred seventy-five million, six hundred forty-seven thousand, two hundred twenty-one".