50386891 has 4 divisors (see below), whose sum is σ = 52124400. Its totient is φ = 48649384.

The previous prime is 50386877. The next prime is 50386907. The reversal of 50386891 is 19868305.

It is a happy number.

50386891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19868305 = 5 ⋅3973661.

It is a cyclic number.

It is not a de Polignac number, because 50386891 - 2⁹ = 50386379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50386871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868711 + ... + 868768.

It is an arithmetic number, because the mean of its divisors is an integer number (13031100).

Almost surely, 2^50386891 is an apocalyptic number.

50386891 is a deficient number, since it is larger than the sum of its proper divisors (1737509).

50386891 is a wasteful number, since it uses less digits than its factorization.

50386891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737508.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 50386891 is about 7098.3724190831. The cubic root of 50386891 is about 369.3509219085.

The spelling of 50386891 in words is "fifty million, three hundred eighty-six thousand, eight hundred ninety-one".