252401717 has 2 divisors, whose sum is σ = 252401718. Its totient is φ = 252401716.

The previous prime is 252401687. The next prime is 252401729. The reversal of 252401717 is 717104252.

252401717 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., 248661361 + 3740356 = 15769^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 252401717 - 2²² = 248207413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252401717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252401777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126200858 + 126200859.

It is an arithmetic number, because the mean of its divisors is an integer number (126200859).

Almost surely, 2^252401717 is an apocalyptic number.

It is an amenable number.

252401717 is a deficient number, since it is larger than the sum of its proper divisors (1).

252401717 is an equidigital number, since it uses as much as digits as its factorization.

252401717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 252401717 is about 15887.1557240432. The cubic root of 252401717 is about 631.9714150467.

Adding to 252401717 its reverse (717104252), we get a palindrome (969505969).

The spelling of 252401717 in words is "two hundred fifty-two million, four hundred one thousand, seven hundred seventeen".