2171743057 has 16 divisors (see below), whose sum is σ = 2403717120. Its totient is φ = 1945646800.

The previous prime is 2171743033. The next prime is 2171743069. The reversal of 2171743057 is 7503471712.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2171743057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171743087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390744 + ... + 396262.

It is an arithmetic number, because the mean of its divisors is an integer number (150232320).

Almost surely, 2^2171743057 is an apocalyptic number.

It is an amenable number.

2171743057 is a deficient number, since it is larger than the sum of its proper divisors (231974063).

2171743057 is a wasteful number, since it uses less digits than its factorization.

2171743057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 2171743057 is about 46601.9640895102. The cubic root of 2171743057 is about 1294.9991417336. Note that the first 3 decimals are identical.

The spelling of 2171743057 in words is "two billion, one hundred seventy-one million, seven hundred forty-three thousand, fifty-seven".