2171066056 has 16 divisors (see below), whose sum is σ = 4310204940. Its totient is φ = 1021678080.

The previous prime is 2171066047. The next prime is 2171066077. The reversal of 2171066056 is 6506601712.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2052996100 + 118069956 = 45310^2 + 10866^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7981725 + ... + 7981996.

Almost surely, 2^2171066056 is an apocalyptic number.

It is an amenable number.

2171066056 is a deficient number, since it is larger than the sum of its proper divisors (2139138884).

2171066056 is a wasteful number, since it uses less digits than its factorization.

2171066056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963744 (or 15963740 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2171066056 is about 46594.6998702642. The cubic root of 2171066056 is about 1294.8645636847.

Adding to 2171066056 its reverse (6506601712), we get a palindrome (8677667768).

The spelling of 2171066056 in words is "two billion, one hundred seventy-one million, sixty-six thousand, fifty-six".