50145191 has 4 divisors (see below), whose sum is σ = 50161032. Its totient is φ = 50129352.

The previous prime is 50145167. The next prime is 50145203. The reversal of 50145191 is 19154105.

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 50145191 - 2¹⁰ = 50144167 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 50145191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50145691) 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, 1361 + ... + 10106.

It is an arithmetic number, because the mean of its divisors is an integer number (12540258).

Almost surely, 2^50145191 is an apocalyptic number.

50145191 is a deficient number, since it is larger than the sum of its proper divisors (15841).

50145191 is a wasteful number, since it uses less digits than its factorization.

50145191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15840.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 50145191 is about 7081.3269236775. The cubic root of 50145191 is about 368.7593974049.

Adding to 50145191 its reverse (19154105), we get a palindrome (69299296).

The spelling of 50145191 in words is "fifty million, one hundred forty-five thousand, one hundred ninety-one".