252795820517 has 2 divisors, whose sum is σ = 252795820518. Its totient is φ = 252795820516.

The previous prime is 252795820493. The next prime is 252795820523. The reversal of 252795820517 is 715028597252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157270937476 + 95524883041 = 396574^2 + 309071^2 .

It is a cyclic number.

It is not a de Polignac number, because 252795820517 - 2⁸ = 252795820261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252795820547) 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, 126397910258 + 126397910259.

It is an arithmetic number, because the mean of its divisors is an integer number (126397910259).

Almost surely, 2^252795820517 is an apocalyptic number.

It is an amenable number.

252795820517 is a deficient number, since it is larger than the sum of its proper divisors (1).

252795820517 is an equidigital number, since it uses as much as digits as its factorization.

252795820517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 252795820517 in words is "two hundred fifty-two billion, seven hundred ninety-five million, eight hundred twenty thousand, five hundred seventeen".