2171097045 has 48 divisors (see below), whose sum is σ = 4121470080. Its totient is φ = 1050715008.

The previous prime is 2171097031. The next prime is 2171097077. The reversal of 2171097045 is 5407901712.

It is a happy number.

It is not a de Polignac number, because 2171097045 - 2³¹ = 23613397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3064 + ... + 65966.

It is an arithmetic number, because the mean of its divisors is an integer number (85863960).

Almost surely, 2^2171097045 is an apocalyptic number.

It is an amenable number.

2171097045 is a deficient number, since it is larger than the sum of its proper divisors (1950373035).

2171097045 is a wasteful number, since it uses less digits than its factorization.

2171097045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62986 (or 62983 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 2171097045 is about 46595.0324068993. The cubic root of 2171097045 is about 1294.8707244625.

Adding to 2171097045 its reverse (5407901712), we get a palindrome (7578998757).

The spelling of 2171097045 in words is "two billion, one hundred seventy-one million, ninety-seven thousand, forty-five".