252242242261 has 2 divisors, whose sum is σ = 252242242262. Its totient is φ = 252242242260.

The previous prime is 252242242247. The next prime is 252242242267. The reversal of 252242242261 is 162242242252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213657497361 + 38584744900 = 462231^2 + 196430^2 .

It is a cyclic number.

It is not a de Polignac number, because 252242242261 - 2²⁹ = 251705371349 is a prime.

It is a super-2 number, since 2×252242242261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252242242267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126121121130 + 126121121131.

It is an arithmetic number, because the mean of its divisors is an integer number (126121121131).

Almost surely, 2^252242242261 is an apocalyptic number.

It is an amenable number.

252242242261 is a deficient number, since it is larger than the sum of its proper divisors (1).

252242242261 is an equidigital number, since it uses as much as digits as its factorization.

252242242261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 34.

Subtracting from 252242242261 its reverse (162242242252), we obtain a palindrome (90000000009).

The spelling of 252242242261 in words is "two hundred fifty-two billion, two hundred forty-two million, two hundred forty-two thousand, two hundred sixty-one".