50091785 has 4 divisors (see below), whose sum is σ = 60110148. Its totient is φ = 40073424.

The previous prime is 50091773. The next prime is 50091793. The reversal of 50091785 is 58719005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58719005 = 5 ⋅11743801.

It can be written as a sum of positive squares in 2 ways, for example, as 7333264 + 42758521 = 2708^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 50091785 - 2⁸ = 50091529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009174 + ... + 5009183.

It is an arithmetic number, because the mean of its divisors is an integer number (15027537).

Almost surely, 2^50091785 is an apocalyptic number.

It is an amenable number.

50091785 is a deficient number, since it is larger than the sum of its proper divisors (10018363).

50091785 is a wasteful number, since it uses less digits than its factorization.

50091785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10018362.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 50091785 is about 7077.5550156816. Note that the first 3 decimals coincide. The cubic root of 50091785 is about 368.6284379538.

The spelling of 50091785 in words is "fifty million, ninety-one thousand, seven hundred eighty-five".