50918143 has 4 divisors (see below), whose sum is σ = 51142680. Its totient is φ = 50693608.

The previous prime is 50918123. The next prime is 50918177. The reversal of 50918143 is 34181905.

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 50918143 - 2⁹ = 50917631 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50918123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111928 + ... + 112381.

It is an arithmetic number, because the mean of its divisors is an integer number (12785670).

Almost surely, 2^50918143 is an apocalyptic number.

50918143 is a deficient number, since it is larger than the sum of its proper divisors (224537).

50918143 is a wasteful number, since it uses less digits than its factorization.

50918143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224536.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 50918143 is about 7135.6949906789. The cubic root of 50918143 is about 370.6444648419.

The spelling of 50918143 in words is "fifty million, nine hundred eighteen thousand, one hundred forty-three".