2171057269 has 2 divisors, whose sum is σ = 2171057270. Its totient is φ = 2171057268.

The previous prime is 2171057257. The next prime is 2171057293. The reversal of 2171057269 is 9627501712.

2171057269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1388456644 + 782600625 = 37262^2 + 27975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171057269 - 2¹³ = 2171049077 is a prime.

It is a super-2 number, since 2×2171057269² = 9426979330555476722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171057209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085528634 + 1085528635.

It is an arithmetic number, because the mean of its divisors is an integer number (1085528635).

Almost surely, 2^2171057269 is an apocalyptic number.

It is an amenable number.

2171057269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171057269 is an equidigital number, since it uses as much as digits as its factorization.

2171057269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 2171057269 is about 46594.6055783285. The cubic root of 2171057269 is about 1294.8628167717.

The spelling of 2171057269 in words is "two billion, one hundred seventy-one million, fifty-seven thousand, two hundred sixty-nine".