501681056 has 24 divisors (see below), whose sum is σ = 996922080. Its totient is φ = 248494528.

The previous prime is 501681023. The next prime is 501681077. The reversal of 501681056 is 650186105.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69836 + ... + 76683.

It is an arithmetic number, because the mean of its divisors is an integer number (41538420).

Almost surely, 2^501681056 is an apocalyptic number.

It is an amenable number.

501681056 is a deficient number, since it is larger than the sum of its proper divisors (495241024).

501681056 is a wasteful number, since it uses less digits than its factorization.

501681056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146636 (or 146628 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 501681056 is about 22398.2377878261. The cubic root of 501681056 is about 794.5890343262.

The spelling of 501681056 in words is "five hundred one million, six hundred eighty-one thousand, fifty-six".