50689717 has 4 divisors (see below), whose sum is σ = 54588940. Its totient is φ = 46790496.

The previous prime is 50689711. The next prime is 50689729. The reversal of 50689717 is 71798605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5410276 + 45279441 = 2326^2 + 6729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50689717 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 (50689711) 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, 1949592 + ... + 1949617.

It is an arithmetic number, because the mean of its divisors is an integer number (13647235).

Almost surely, 2^50689717 is an apocalyptic number.

It is an amenable number.

50689717 is a deficient number, since it is larger than the sum of its proper divisors (3899223).

50689717 is a wasteful number, since it uses less digits than its factorization.

50689717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899222.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 50689717 is about 7119.6711300453. The cubic root of 50689717 is about 370.0893794299.

The spelling of 50689717 in words is "fifty million, six hundred eighty-nine thousand, seven hundred seventeen".