801256516 has 12 divisors (see below), whose sum is σ = 1402548588. Its totient is φ = 400528352.

The previous prime is 801256499. The next prime is 801256523. The reversal of 801256516 is 615652108.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 362521600 + 438734916 = 19040^2 + 20946^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5191 + ... + 40366.

It is an arithmetic number, because the mean of its divisors is an integer number (116879049).

Almost surely, 2^801256516 is an apocalyptic number.

It is an amenable number.

801256516 is a deficient number, since it is larger than the sum of its proper divisors (601292072).

801256516 is a wasteful number, since it uses less digits than its factorization.

801256516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49958 (or 49956 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 801256516 is about 28306.4748070119. The cubic root of 801256516 is about 928.8035317094.

The spelling of 801256516 in words is "eight hundred one million, two hundred fifty-six thousand, five hundred sixteen".