252752509 has 2 divisors, whose sum is σ = 252752510. Its totient is φ = 252752508.

The previous prime is 252752503. The next prime is 252752531. The reversal of 252752509 is 905257252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225660484 + 27092025 = 15022^2 + 5205^2 .

It is a cyclic number.

It is not a de Polignac number, because 252752509 - 2⁹ = 252751997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252752503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126376254 + 126376255.

It is an arithmetic number, because the mean of its divisors is an integer number (126376255).

Almost surely, 2^252752509 is an apocalyptic number.

It is an amenable number.

252752509 is a deficient number, since it is larger than the sum of its proper divisors (1).

252752509 is an equidigital number, since it uses as much as digits as its factorization.

252752509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 252752509 is about 15898.1920041242. The cubic root of 252752509 is about 632.2640542245.

The spelling of 252752509 in words is "two hundred fifty-two million, seven hundred fifty-two thousand, five hundred nine".