2125517 has 2 divisors, whose sum is σ = 2125518. Its totient is φ = 2125516.

The previous prime is 2125477. The next prime is 2125523. The reversal of 2125517 is 7155212.

It is a happy number.

2125517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019241 + 106276 = 1421^2 + 326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2125492 and 2125501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062758 + 1062759.

It is an arithmetic number, because the mean of its divisors is an integer number (1062759).

2^2125517 is an apocalyptic number.

It is an amenable number.

2125517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125517 is an equidigital number, since it uses as much as digits as its factorization.

2125517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 23.

The square root of 2125517 is about 1457.9152924639. The cubic root of 2125517 is about 128.5745049822.

The spelling of 2125517 in words is "two million, one hundred twenty-five thousand, five hundred seventeen".