252641317 has 2 divisors, whose sum is σ = 252641318. Its totient is φ = 252641316.

The previous prime is 252641287. The next prime is 252641341. The reversal of 252641317 is 713146252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152621316 + 100020001 = 12354^2 + 10001^2 .

It is a cyclic number.

It is not a de Polignac number, because 252641317 - 2⁷ = 252641189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252641357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126320658 + 126320659.

It is an arithmetic number, because the mean of its divisors is an integer number (126320659).

Almost surely, 2^252641317 is an apocalyptic number.

It is an amenable number.

252641317 is a deficient number, since it is larger than the sum of its proper divisors (1).

252641317 is an equidigital number, since it uses as much as digits as its factorization.

252641317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 252641317 is about 15894.6946180164. The cubic root of 252641317 is about 632.1713244935.

Adding to 252641317 its reverse (713146252), we get a palindrome (965787569).

The spelling of 252641317 in words is "two hundred fifty-two million, six hundred forty-one thousand, three hundred seventeen".