252443522447 has 2 divisors, whose sum is σ = 252443522448. Its totient is φ = 252443522446.

The previous prime is 252443522369. The next prime is 252443522501. The reversal of 252443522447 is 744225344252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252443522447 - 2³⁴ = 235263653263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252443522398 and 252443522407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252443522147) 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, 126221761223 + 126221761224.

It is an arithmetic number, because the mean of its divisors is an integer number (126221761224).

Almost surely, 2^252443522447 is an apocalyptic number.

252443522447 is a deficient number, since it is larger than the sum of its proper divisors (1).

252443522447 is an equidigital number, since it uses as much as digits as its factorization.

252443522447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2150400, while the sum is 44.

Adding to 252443522447 its reverse (744225344252), we get a palindrome (996668866699).

The spelling of 252443522447 in words is "two hundred fifty-two billion, four hundred forty-three million, five hundred twenty-two thousand, four hundred forty-seven".