252412217 has 2 divisors, whose sum is σ = 252412218. Its totient is φ = 252412216.

The previous prime is 252412177. The next prime is 252412253. The reversal of 252412217 is 712214252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240994576 + 11417641 = 15524^2 + 3379^2 .

It is a cyclic number.

It is not a de Polignac number, because 252412217 - 2²² = 248217913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252412117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126206108 + 126206109.

It is an arithmetic number, because the mean of its divisors is an integer number (126206109).

Almost surely, 2^252412217 is an apocalyptic number.

It is an amenable number.

252412217 is a deficient number, since it is larger than the sum of its proper divisors (1).

252412217 is an equidigital number, since it uses as much as digits as its factorization.

252412217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 26.

The square root of 252412217 is about 15887.4861762332. The cubic root of 252412217 is about 631.9801783360.

Adding to 252412217 its reverse (712214252), we get a palindrome (964626469).

It can be divided in two parts, 2524 and 12217, that added together give a palindrome (14741).

The spelling of 252412217 in words is "two hundred fifty-two million, four hundred twelve thousand, two hundred seventeen".