50851218 has 48 divisors (see below), whose sum is σ = 113188320. Its totient is φ = 15216960.

The previous prime is 50851217. The next prime is 50851219. The reversal of 50851218 is 81215805.

It is an interprime number because it is at equal distance from previous prime (50851217) and next prime (50851219).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50851217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64221 + ... + 65007.

It is an arithmetic number, because the mean of its divisors is an integer number (2358090).

Almost surely, 2^50851218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50851218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56594160).

50851218 is an abundant number, since it is smaller than the sum of its proper divisors (62337102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50851218 is a wasteful number, since it uses less digits than its factorization.

50851218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 50851218 is about 7131.0039966333. The cubic root of 50851218 is about 370.4820063345.

The spelling of 50851218 in words is "fifty million, eight hundred fifty-one thousand, two hundred eighteen".