50216660 has 72 divisors (see below), whose sum is σ = 116212320. Its totient is φ = 18215808.

The previous prime is 50216653. The next prime is 50216687. The reversal of 50216660 is 6661205.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 280451 + ... + 280629.

It is an arithmetic number, because the mean of its divisors is an integer number (1614060).

Almost surely, 2^50216660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50216660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58106160).

50216660 is an abundant number, since it is smaller than the sum of its proper divisors (65995660).

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

50216660 is a wasteful number, since it uses less digits than its factorization.

50216660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 50216660 is about 7086.3714269011. The cubic root of 50216660 is about 368.9345046223.

Adding to 50216660 its reverse (6661205), we get a palindrome (56877865).

The spelling of 50216660 in words is "fifty million, two hundred sixteen thousand, six hundred sixty".