501661036 has 12 divisors (see below), whose sum is σ = 878236128. Its totient is φ = 250736432.

The previous prime is 501661031. The next prime is 501661051. The reversal of 501661036 is 630166105.

It is a junction number, because it is equal to n+sod(n) for n = 501660995 and 501661013.

It is not an unprimeable number, because it can be changed into a prime (501661031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10756 + ... + 33451.

It is an arithmetic number, because the mean of its divisors is an integer number (73186344).

Almost surely, 2^501661036 is an apocalyptic number.

It is an amenable number.

501661036 is a deficient number, since it is larger than the sum of its proper divisors (376575092).

501661036 is a wasteful number, since it uses less digits than its factorization.

501661036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47048 (or 47046 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 501661036 is about 22397.7908732089. The cubic root of 501661036 is about 794.5784646068.

The spelling of 501661036 in words is "five hundred one million, six hundred sixty-one thousand, thirty-six".