50618891 has 4 divisors (see below), whose sum is σ = 52364400. Its totient is φ = 48873384.

The previous prime is 50618863. The next prime is 50618899. The reversal of 50618891 is 19881605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50618891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50618899) 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, 872711 + ... + 872768.

It is an arithmetic number, because the mean of its divisors is an integer number (13091100).

Almost surely, 2^50618891 is an apocalyptic number.

50618891 is a deficient number, since it is larger than the sum of its proper divisors (1745509).

50618891 is a wasteful number, since it uses less digits than its factorization.

50618891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745508.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 50618891 is about 7114.6954256665. The cubic root of 50618891 is about 369.9169304625.

The spelling of 50618891 in words is "fifty million, six hundred eighteen thousand, eight hundred ninety-one".