810000052 has 24 divisors (see below), whose sum is σ = 1441343624. Its totient is φ = 398241792.

The previous prime is 810000049. The next prime is 810000083. The reversal of 810000052 is 250000018.

It is a happy number.

810000052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8317456 + 801682596 = 2884^2 + 28314^2 .

It is a super-2 number, since 2×810000052² = 1312200168480005408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 809999990 and 810000035.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54268 + ... + 67564.

Almost surely, 2^810000052 is an apocalyptic number.

It is an amenable number.

810000052 is a deficient number, since it is larger than the sum of its proper divisors (631343572).

810000052 is a wasteful number, since it uses less digits than its factorization.

810000052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13555 (or 13553 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 810000052 is about 28460.4998550623. The cubic root of 810000052 is about 932.1697717338.

The spelling of 810000052 in words is "eight hundred ten million, fifty-two", and thus it is an aban number.