50016689 has 4 divisors (see below), whose sum is σ = 50151156. Its totient is φ = 49882224.

The previous prime is 50016661. The next prime is 50016691. The reversal of 50016689 is 98661005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98661005 = 5 ⋅19732201.

It can be written as a sum of positive squares in 2 ways, for example, as 34869025 + 15147664 = 5905^2 + 3892^2 .

It is a cyclic number.

It is not a de Polignac number, because 50016689 - 2²⁰ = 48968113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50016649) 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, 66674 + ... + 67419.

It is an arithmetic number, because the mean of its divisors is an integer number (12537789).

Almost surely, 2^50016689 is an apocalyptic number.

It is an amenable number.

50016689 is a deficient number, since it is larger than the sum of its proper divisors (134467).

50016689 is a wasteful number, since it uses less digits than its factorization.

50016689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134466.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 50016689 is about 7072.2478039164. The cubic root of 50016689 is about 368.4441338390. Note that the first 3 decimals are identical.

Subtracting 50016689 from its reverse (98661005), we obtain a triangular number (48644316 = T₉₈₆₃).

It can be divided in two parts, 50016 and 689, that added together give a palindrome (50705).

The spelling of 50016689 in words is "fifty million, sixteen thousand, six hundred eighty-nine".