2135717 has 2 divisors, whose sum is σ = 2135718. Its totient is φ = 2135716.

The previous prime is 2135713. The next prime is 2135719. The reversal of 2135717 is 7175312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359556 + 776161 = 1166^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135717 - 2² = 2135713 is a prime.

It is a super-2 number, since 2×2135717² = 9122574208178, which contains 22 as substring.

Together with 2135719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067858 + 1067859.

It is an arithmetic number, because the mean of its divisors is an integer number (1067859).

2^2135717 is an apocalyptic number.

It is an amenable number.

2135717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135717 is an equidigital number, since it uses as much as digits as its factorization.

2135717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1470, while the sum is 26.

The square root of 2135717 is about 1461.4092513735. The cubic root of 2135717 is about 128.7798460358.

It can be divided in two parts, 21 and 35717, that multiplied together give a palindrome (750057).

The spelling of 2135717 in words is "two million, one hundred thirty-five thousand, seven hundred seventeen".