5050001666 has 4 divisors (see below), whose sum is σ = 7575002502. Its totient is φ = 2525000832.

The previous prime is 5050001651. The next prime is 5050001683. The reversal of 5050001666 is 6661000505.

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., 3841396441 + 1208605225 = 61979^2 + 34765^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262500415 + ... + 1262500418.

Almost surely, 2^5050001666 is an apocalyptic number.

5050001666 is a deficient number, since it is larger than the sum of its proper divisors (2525000836).

5050001666 is a wasteful number, since it uses less digits than its factorization.

5050001666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525000835.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5050001666 is about 71063.3637396936. The cubic root of 5050001666 is about 1715.6571602873.

The spelling of 5050001666 in words is "five billion, fifty million, one thousand, six hundred sixty-six".