50105591 has 4 divisors (see below), whose sum is σ = 51833400. Its totient is φ = 48377784.

The previous prime is 50105557. The next prime is 50105593. The reversal of 50105591 is 19550105.

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 50105591 - 2²² = 45911287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50105591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50105593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863861 + ... + 863918.

It is an arithmetic number, because the mean of its divisors is an integer number (12958350).

Almost surely, 2^50105591 is an apocalyptic number.

50105591 is a deficient number, since it is larger than the sum of its proper divisors (1727809).

50105591 is a wasteful number, since it uses less digits than its factorization.

50105591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727808.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 50105591 is about 7078.5302853064. The cubic root of 50105591 is about 368.6623012359.

Adding to 50105591 its reverse (19550105), we get a palindrome (69655696).

It can be divided in two parts, 5010 and 5591, that added together give a palindrome (10601).

The spelling of 50105591 in words is "fifty million, one hundred five thousand, five hundred ninety-one".