1713056021 has 2 divisors, whose sum is σ = 1713056022. Its totient is φ = 1713056020.

The previous prime is 1713056011. The next prime is 1713056029. The reversal of 1713056021 is 1206503171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1712800996 + 255025 = 41386^2 + 505^2 .

It is an emirp because it is prime and its reverse (1206503171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1713056021 - 2⁶ = 1713055957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1713056029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 856528010 + 856528011.

It is an arithmetic number, because the mean of its divisors is an integer number (856528011).

Almost surely, 2^1713056021 is an apocalyptic number.

It is an amenable number.

1713056021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1713056021 is an equidigital number, since it uses as much as digits as its factorization.

1713056021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1713056021 is about 41389.0809393009. The cubic root of 1713056021 is about 1196.5307253789.

Adding to 1713056021 its reverse (1206503171), we get a palindrome (2919559192).

The spelling of 1713056021 in words is "one billion, seven hundred thirteen million, fifty-six thousand, twenty-one".