252745517 has 2 divisors, whose sum is σ = 252745518. Its totient is φ = 252745516.

The previous prime is 252745513. The next prime is 252745523. The reversal of 252745517 is 715547252.

252745517 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., 198781801 + 53963716 = 14099^2 + 7346^2 .

It is a cyclic number.

It is not a de Polignac number, because 252745517 - 2² = 252745513 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252745513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126372758 + 126372759.

It is an arithmetic number, because the mean of its divisors is an integer number (126372759).

Almost surely, 2^252745517 is an apocalyptic number.

It is an amenable number.

252745517 is a deficient number, since it is larger than the sum of its proper divisors (1).

252745517 is an equidigital number, since it uses as much as digits as its factorization.

252745517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98000, while the sum is 38.

The square root of 252745517 is about 15897.9721033848. The cubic root of 252745517 is about 632.2582239744.

The spelling of 252745517 in words is "two hundred fifty-two million, seven hundred forty-five thousand, five hundred seventeen".