252317609 has 2 divisors, whose sum is σ = 252317610. Its totient is φ = 252317608.

The previous prime is 252317557. The next prime is 252317617. The reversal of 252317609 is 906713252.

252317609 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., 251317609 + 1000000 = 15853^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 252317609 - 2⁸ = 252317353 is a prime.

It is a super-2 number, since 2×252317609² = 127328351622953762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252317699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126158804 + 126158805.

It is an arithmetic number, because the mean of its divisors is an integer number (126158805).

Almost surely, 2^252317609 is an apocalyptic number.

It is an amenable number.

252317609 is a deficient number, since it is larger than the sum of its proper divisors (1).

252317609 is an equidigital number, since it uses as much as digits as its factorization.

252317609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 252317609 is about 15884.5084595023. The cubic root of 252317609 is about 631.9012098229.

The spelling of 252317609 in words is "two hundred fifty-two million, three hundred seventeen thousand, six hundred nine".