50001665 has 16 divisors (see below), whose sum is σ = 68694912. Its totient is φ = 34226304.

The previous prime is 50001649. The next prime is 50001683. The reversal of 50001665 is 56610005.

It is not a de Polignac number, because 50001665 - 2⁴ = 50001649 is a prime.

It is a Duffinian number.

50001665 is a modest number, since divided by 1665 gives 50 as remainder.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50001665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29162 + ... + 30828.

It is an arithmetic number, because the mean of its divisors is an integer number (4293432).

Almost surely, 2^50001665 is an apocalyptic number.

It is an amenable number.

50001665 is a deficient number, since it is larger than the sum of its proper divisors (18693247).

50001665 is a wasteful number, since it uses less digits than its factorization.

50001665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 50001665 is about 7071.1855441644. The cubic root of 50001665 is about 368.4072390936.

The spelling of 50001665 in words is "fifty million, one thousand, six hundred sixty-five".