252805811 has 8 divisors (see below), whose sum is σ = 277681920. Its totient is φ = 229086792.

The previous prime is 252805783. The next prime is 252805829. The reversal of 252805811 is 118508252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252805811 - 2¹⁰ = 252804787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252805831) 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 in 7 ways as a sum of consecutive naturals, for example, 288815 + ... + 289688.

It is an arithmetic number, because the mean of its divisors is an integer number (34710240).

Almost surely, 2^252805811 is an apocalyptic number.

252805811 is a deficient number, since it is larger than the sum of its proper divisors (24876109).

252805811 is a wasteful number, since it uses less digits than its factorization.

252805811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578545.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 252805811 is about 15899.8682698946. The cubic root of 252805811 is about 632.3084963417.

The spelling of 252805811 in words is "two hundred fifty-two million, eight hundred five thousand, eight hundred eleven".