252544423217 has 2 divisors, whose sum is σ = 252544423218. Its totient is φ = 252544423216.

The previous prime is 252544423213. The next prime is 252544423249. The reversal of 252544423217 is 712324445252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252366574321 + 177848896 = 502361^2 + 13336^2 .

It is a cyclic number.

It is not a de Polignac number, because 252544423217 - 2² = 252544423213 is a prime.

It is not a weakly prime, because it can be changed into another prime (252544423213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126272211608 + 126272211609.

It is an arithmetic number, because the mean of its divisors is an integer number (126272211609).

Almost surely, 2^252544423217 is an apocalyptic number.

It is an amenable number.

252544423217 is a deficient number, since it is larger than the sum of its proper divisors (1).

252544423217 is an equidigital number, since it uses as much as digits as its factorization.

252544423217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 41.

Adding to 252544423217 its reverse (712324445252), we get a palindrome (964868868469).

The spelling of 252544423217 in words is "two hundred fifty-two billion, five hundred forty-four million, four hundred twenty-three thousand, two hundred seventeen".