50142891 has 8 divisors (see below), whose sum is σ = 66909184. Its totient is φ = 33402600.

The previous prime is 50142863. The next prime is 50142893. The reversal of 50142891 is 19824105.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50142891 - 2¹¹ = 50140843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50142893) 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 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 10116.

It is an arithmetic number, because the mean of its divisors is an integer number (8363648).

Almost surely, 2^50142891 is an apocalyptic number.

50142891 is a deficient number, since it is larger than the sum of its proper divisors (16766293).

50142891 is a wasteful number, since it uses less digits than its factorization.

50142891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13001.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 50142891 is about 7081.1645228733. The cubic root of 50142891 is about 368.7537593795.

Adding to 50142891 its reverse (19824105), we get a palindrome (69966996).

The spelling of 50142891 in words is "fifty million, one hundred forty-two thousand, eight hundred ninety-one".