50001660 has 36 divisors (see below), whose sum is σ = 151672248. Its totient is φ = 13333728.

The previous prime is 50001649. The next prime is 50001683. The reversal of 50001660 is 6610005.

50001660 is a `hidden beast` number, since 5 + 0 + 0 + 0 + 1 + 660 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 138714 + ... + 139073.

It is an arithmetic number, because the mean of its divisors is an integer number (4213118).

Almost surely, 2^50001660 is an apocalyptic number.

It is an amenable number.

50001660 is an abundant number, since it is smaller than the sum of its proper divisors (101670588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50001660 is a wasteful number, since it uses less digits than its factorization.

50001660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277802 (or 277797 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 50001660 is about 7071.1851906169. The cubic root of 50001660 is about 368.4072268138.

Adding to 50001660 its reverse (6610005), we get a palindrome (56611665).

The spelling of 50001660 in words is "fifty million, one thousand, six hundred sixty".