50003666 has 4 divisors (see below), whose sum is σ = 75005502. Its totient is φ = 25001832.

The previous prime is 50003659. The next prime is 50003693. The reversal of 50003666 is 66630005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42523441 + 7480225 = 6521^2 + 2735^2 .

It is a super-2 number, since 2×50003666² = 5000733226879112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500915 + ... + 12500918.

Almost surely, 2^50003666 is an apocalyptic number.

50003666 is a deficient number, since it is larger than the sum of its proper divisors (25001836).

50003666 is a wasteful number, since it uses less digits than its factorization.

50003666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25001835.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 50003666 is about 7071.3270324600. The cubic root of 50003666 is about 368.4121534170.

The spelling of 50003666 in words is "fifty million, three thousand, six hundred sixty-six".