252424261 has 2 divisors, whose sum is σ = 252424262. Its totient is φ = 252424260.

The previous prime is 252424231. The next prime is 252424339. The reversal of 252424261 is 162424252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160149025 + 92275236 = 12655^2 + 9606^2 .

It is a cyclic number.

It is not a de Polignac number, because 252424261 - 2¹¹ = 252422213 is a prime.

It is a super-2 number, since 2×252424261² = 127436015082792242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252424231) 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, 126212130 + 126212131.

It is an arithmetic number, because the mean of its divisors is an integer number (126212131).

Almost surely, 2^252424261 is an apocalyptic number.

It is an amenable number.

252424261 is a deficient number, since it is larger than the sum of its proper divisors (1).

252424261 is an equidigital number, since it uses as much as digits as its factorization.

252424261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 252424261 is about 15887.8652121674. The cubic root of 252424261 is about 631.9902299470.

Subtracting from 252424261 its reverse (162424252), we obtain a palindrome (90000009).

The spelling of 252424261 in words is "two hundred fifty-two million, four hundred twenty-four thousand, two hundred sixty-one".