50665889 has 4 divisors (see below), whose sum is σ = 50853120. Its totient is φ = 50478660.

The previous prime is 50665877. The next prime is 50665903. The reversal of 50665889 is 98856605.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98856605 = 5 ⋅19771321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50665889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50665819) 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, 93209 + ... + 93750.

It is an arithmetic number, because the mean of its divisors is an integer number (12713280).

Almost surely, 2^50665889 is an apocalyptic number.

It is an amenable number.

50665889 is a deficient number, since it is larger than the sum of its proper divisors (187231).

50665889 is a wasteful number, since it uses less digits than its factorization.

50665889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187230.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 50665889 is about 7117.9975414438. The cubic root of 50665889 is about 370.0313803431.

The spelling of 50665889 in words is "fifty million, six hundred sixty-five thousand, eight hundred eighty-nine".