50666501 has 4 divisors (see below), whose sum is σ = 50819904. Its totient is φ = 50513100.

The previous prime is 50666489. The next prime is 50666519. The reversal of 50666501 is 10566605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50666501 - 2²² = 46472197 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 (50666531) 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, 76205 + ... + 76866.

It is an arithmetic number, because the mean of its divisors is an integer number (12704976).

Almost surely, 2^50666501 is an apocalyptic number.

It is an amenable number.

50666501 is a deficient number, since it is larger than the sum of its proper divisors (153403).

50666501 is a wasteful number, since it uses less digits than its factorization.

50666501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153402.

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

The square root of 50666501 is about 7118.0405309327. The cubic root of 50666501 is about 370.0328702232.

The spelling of 50666501 in words is "fifty million, six hundred sixty-six thousand, five hundred one".