2144125517 has 2 divisors, whose sum is σ = 2144125518. Its totient is φ = 2144125516.

The previous prime is 2144125483. The next prime is 2144125519. The reversal of 2144125517 is 7155214412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073800521 + 70324996 = 45539^2 + 8386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144125517 - 2⁶ = 2144125453 is a prime.

Together with 2144125519, 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 (2144125519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072062758 + 1072062759.

It is an arithmetic number, because the mean of its divisors is an integer number (1072062759).

Almost surely, 2^2144125517 is an apocalyptic number.

It is an amenable number.

2144125517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144125517 is an equidigital number, since it uses as much as digits as its factorization.

2144125517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 32.

The square root of 2144125517 is about 46304.7029684891. The cubic root of 2144125517 is about 1289.4863080990.

Adding to 2144125517 its reverse (7155214412), we get a palindrome (9299339929).

The spelling of 2144125517 in words is "two billion, one hundred forty-four million, one hundred twenty-five thousand, five hundred seventeen".