252718849 has 2 divisors, whose sum is σ = 252718850. Its totient is φ = 252718848.

The previous prime is 252718813. The next prime is 252718861. The reversal of 252718849 is 948817252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185150449 + 67568400 = 13607^2 + 8220^2 .

It is a cyclic number.

It is not a de Polignac number, because 252718849 - 2¹⁵ = 252686081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252718799 and 252718808.

It is not a weakly prime, because it can be changed into another prime (252118849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126359424 + 126359425.

It is an arithmetic number, because the mean of its divisors is an integer number (126359425).

Almost surely, 2^252718849 is an apocalyptic number.

It is an amenable number.

252718849 is a deficient number, since it is larger than the sum of its proper divisors (1).

252718849 is an equidigital number, since it uses as much as digits as its factorization.

252718849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 252718849 is about 15897.1333579360. The cubic root of 252718849 is about 632.2359859863.

The spelling of 252718849 in words is "two hundred fifty-two million, seven hundred eighteen thousand, eight hundred forty-nine".