2171057293 has 2 divisors, whose sum is σ = 2171057294. Its totient is φ = 2171057292.

The previous prime is 2171057269. The next prime is 2171057327. The reversal of 2171057293 is 3927501712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1971626409 + 199430884 = 44403^2 + 14122^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171057293 - 2⁹ = 2171056781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171057093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085528646 + 1085528647.

It is an arithmetic number, because the mean of its divisors is an integer number (1085528647).

Almost surely, 2^2171057293 is an apocalyptic number.

It is an amenable number.

2171057293 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171057293 is an equidigital number, since it uses as much as digits as its factorization.

2171057293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 2171057293 is about 46594.6058358690. The cubic root of 2171057293 is about 1294.8628215431.

It can be divided in two parts, 21710 and 57293, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 2171057293 in words is "two billion, one hundred seventy-one million, fifty-seven thousand, two hundred ninety-three".