252805843 has 2 divisors, whose sum is σ = 252805844. Its totient is φ = 252805842.

The previous prime is 252805831. The next prime is 252805859. The reversal of 252805843 is 348508252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252805843 - 2²¹ = 250708691 is a prime.

It is not a weakly prime, because it can be changed into another prime (252805043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126402921 + 126402922.

It is an arithmetic number, because the mean of its divisors is an integer number (126402922).

Almost surely, 2^252805843 is an apocalyptic number.

252805843 is a deficient number, since it is larger than the sum of its proper divisors (1).

252805843 is an equidigital number, since it uses as much as digits as its factorization.

252805843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 252805843 is about 15899.8692761922. The cubic root of 252805843 is about 632.3085230207.

The spelling of 252805843 in words is "two hundred fifty-two million, eight hundred five thousand, eight hundred forty-three".