805510252 has 24 divisors (see below), whose sum is σ = 1524325824. Its totient is φ = 370996992.

The previous prime is 805510243. The next prime is 805510259. The reversal of 805510252 is 252015508.

It is a self number, because there is not a number n which added to its sum of digits gives 805510252.

It is not an unprimeable number, because it can be changed into a prime (805510259) 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 in 7 ways as a sum of consecutive naturals, for example, 122823 + ... + 129214.

It is an arithmetic number, because the mean of its divisors is an integer number (63513576).

Almost surely, 2^805510252 is an apocalyptic number.

It is an amenable number.

805510252 is a deficient number, since it is larger than the sum of its proper divisors (718815572).

805510252 is a wasteful number, since it uses less digits than its factorization.

805510252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252105 (or 252103 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 805510252 is about 28381.5125037409. The cubic root of 805510252 is about 930.4442522364. Note that the first 3 decimals are identical.

The spelling of 805510252 in words is "eight hundred five million, five hundred ten thousand, two hundred fifty-two".