50405666 has 8 divisors (see below), whose sum is σ = 76357404. Its totient is φ = 24953200.

The previous prime is 50405639. The next prime is 50405671. The reversal of 50405666 is 66650405.

It can be written as a sum of positive squares in 2 ways, for example, as 48790225 + 1615441 = 6985^2 + 1271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124565 + ... + 124968.

Almost surely, 2^50405666 is an apocalyptic number.

50405666 is a deficient number, since it is larger than the sum of its proper divisors (25951738).

50405666 is a wasteful number, since it uses less digits than its factorization.

50405666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249636.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 50405666 is about 7099.6947821720. The cubic root of 50405666 is about 369.3967916595.

The spelling of 50405666 in words is "fifty million, four hundred five thousand, six hundred sixty-six".