50391863 has 4 divisors (see below), whose sum is σ = 50407800. Its totient is φ = 50375928.

The previous prime is 50391811. The next prime is 50391877. The reversal of 50391863 is 36819305.

50391863 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.

It is a cyclic number.

It is not a de Polignac number, because 50391863 - 2⁶ = 50391799 is a prime.

It is a super-2 number, since 2×50391863² = 5078679713221538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50391163) 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, 1445 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (12601950).

Almost surely, 2^50391863 is an apocalyptic number.

50391863 is a deficient number, since it is larger than the sum of its proper divisors (15937).

50391863 is a wasteful number, since it uses less digits than its factorization.

50391863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15936.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 50391863 is about 7098.7226315725. The cubic root of 50391863 is about 369.3630702560.

The spelling of 50391863 in words is "fifty million, three hundred ninety-one thousand, eight hundred sixty-three".