50121216 has 120 divisors (see below), whose sum is σ = 147618900. Its totient is φ = 16367616.

The previous prime is 50121191. The next prime is 50121217. The reversal of 50121216 is 61212105.

It can be written as a sum of positive squares in 2 ways, for example, as 48441600 + 1679616 = 6960^2 + 1296^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336310 + ... + 336458.

Almost surely, 2^50121216 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 50121216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73809450).

50121216 is an abundant number, since it is smaller than the sum of its proper divisors (97497684).

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

50121216 is a wasteful number, since it uses less digits than its factorization.

50121216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 50121216 is about 7079.6338888392. The cubic root of 50121216 is about 368.7006186483.

The spelling of 50121216 in words is "fifty million, one hundred twenty-one thousand, two hundred sixteen".