50666503 has 4 divisors (see below), whose sum is σ = 50682520. Its totient is φ = 50650488.

The previous prime is 50666489. The next prime is 50666519. The reversal of 50666503 is 30566605.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50666503 - 2²¹ = 48569351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50666593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500 + ... + 10177.

It is an arithmetic number, because the mean of its divisors is an integer number (12670630).

Almost surely, 2^50666503 is an apocalyptic number.

50666503 is a deficient number, since it is larger than the sum of its proper divisors (16017).

50666503 is a wasteful number, since it uses less digits than its factorization.

50666503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16016.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 50666503 is about 7118.0406714208. The cubic root of 50666503 is about 370.0328750921.

The spelling of 50666503 in words is "fifty million, six hundred sixty-six thousand, five hundred three".