1805252 has 6 divisors (see below), whose sum is σ = 3159198. Its totient is φ = 902624.

The previous prime is 1805239. The next prime is 1805261. The reversal of 1805252 is 2525081.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 817216 = 994^2 + 904^2 .

It is an unprimeable number.

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, 225653 + ... + 225660.

It is an arithmetic number, because the mean of its divisors is an integer number (526533).

2^1805252 is an apocalyptic number.

It is an amenable number.

1805252 is a deficient number, since it is larger than the sum of its proper divisors (1353946).

1805252 is a wasteful number, since it uses less digits than its factorization.

1805252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451317 (or 451315 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1805252 is about 1343.5966656702. The cubic root of 1805252 is about 121.7622351223.

The spelling of 1805252 in words is "one million, eight hundred five thousand, two hundred fifty-two".